Related by context. All words. (Click for frequent words.) 81 Maoist rebellion 76 Maoist revolt 70 Maoist rebels 67 Maoists 67 Maoist 66 Maoist guerrillas 66 Naxalism 65 insurgency 64 naxalism 62 Naxal menace 62 impoverished Himalayan 62 Naxalite movement 62 Naxalites 62 Maoist menace 62 separatist insurgency 60 Naxal 60 bloody Maoist insurgency 60 Terai unrest 60 Naxalite 59 Maoist insurrection 59 Naxals 59 separatist revolt 58 Naxalite menace 58 naxal 57 militancy 57 impoverished Himalayan kingdom 57 Nepal 57 Terai 57 insurgencies 57 separatist rebellion 57 separatist insurgencies 56 naxal menace 56 naxalites 54 Nepal Maoist guerrillas 54 Nepal Maoist rebels 54 naxalite 54 King Gyanendra 54 Shining Path guerrillas 54 Naxalites Maoists 54 Maoist guerillas 54 Himalayan kingdom 53 Tarai 53 Nepal Maoists 53 Junglemahal 53 Tamil rebels 53 Prachanda 53 Nepalese Maoists 53 quell Maoist insurgency 53 Lalgarh 52 Terai plains 52 Islamist insurgency 52 Tamil Tiger rebels 52 Nepal Maoist 52 King Gyanendra seized 52 endemic graft 52 Tamil separatist 52 spiraling cholera epidemic 52 Shah dynasty 52 communal strife 52 naxals 52 Himalayan republic 51 Maoism 51 communal riots 51 Chhattisgarh 51 Gyanendra 51 Left Front 51 separatist rebels 51 CPN Maoist 51 Gorkhaland agitation 51 terai 51 paramilitary troopers 51 West Bengal 51 Left Wing Extremism 51 Maoist stronghold 51 Nepal Terai 51 naxalite menace 51 escalating Maoist insurgency 51 Maoist guerilla 51 Kashmir valley 51 Taliban insurgency 51 Gyanendra sacked 51 ethnic Madhesi 51 guerrillas 51 separatist rebellions 51 Bastar region 51 Bihar 51 Maoist guerrilla 50 Naxalite Maoist 50 scenic Himalayan 50 Jangalmahal 50 Jangal Mahal 50 ethno communal 50 Shining Path 50 secessionist rebellion 50 Taleban insurgency 50 maoist 50 Madhesis 50 CPN M 50 tarai 50 Nepal Terai plains 50 Nandigram 50 peasant uprising 50 Maoists cadres 50 jungle raj 50 Naxal affected 50 terai plains 50 leftwing extremism 50 Nepals 50 Islamist militancy 49 Islamic militancy 49 Madhesi 49 autocratic monarchy 49 abolish monarchy 49 Gorkhaland 49 Ulfa 49 tribals 49 ULFA 49 leftist guerrillas 49 constituent assembly elections 49 Dimasas 49 Chhattisgarh Bastar region 49 adivasis 49 communist insurgencies 49 leftist rebels 49 maoists 49 leftwing guerrillas 49 Naxalities 49 southern Terai plains 49 communist guerrillas 49 Naxalism Maoism 49 Mahadhesi 49 king Gyanendra 49 Maoist Shining Path 49 Maoist supremo 48 Posco agitation 48 Occupied Kashmir 48 Tamil separatists 48 Militant separatist 48 Deuba 48 ethnic bloodletting 48 Gorkhas 48 Norwegian brokered 48 Himalayan territory 48 rebels 48 Kashmir 48 anti Indianism 48 simmering separatist 48 occupied Kashmir 48 Nepalganj 48 separatist guerrillas 48 dengue menace 48 Indian Occupied Kashmir 48 West Bengal Naxalbari 48 Jharkhand 48 Sikh militancy 48 restore multiparty democracy 48 Tamil separatism 48 leftist insurgencies 48 monarch King Gyanendra 48 UCPN Maoist 48 Shining Path insurgency 48 Nepal King Gyanendra 48 Nepali Congress 48 Maoist insurgencies 48 Kamaiyas 48 Tamil Tiger guerrillas 47 Salwa Judum 47 Gorkha 47 Tamil Tiger separatists 47 King Gyanendra sacked 47 Nepalese 47 Himalayan region 47 ethnic Nepalis 47 Operation Greenhunt 47 DHD J 47 Tamil Tiger separatist 47 Adivasis 47 Prithvi Narayan Shah 47 Royal Nepalese 47 UCPN M 47 fratricidal killings 47 CPN Maoists 47 Nepali Maoists 47 Kapilavastu 47 sectarian violence 47 agrarian distress 47 factional fighting 47 Maoist Naxalite 47 Leftist ultras 47 Muslim separatists 47 resurgent Taliban 47 Loktantra 47 southernmost provinces 47 Bhattarai 47 Gujjar agitation 47 peasant revolt 47 Assam 47 Maoist cadres 47 Tamil homeland 47 Liberation Tigers 47 farmer suicides 47 Prime Minister Girija Koirala 46 Nepal constitutional monarchy 46 Gyanendra seized 46 Darjeeling Hills 46 Thailand southernmost provinces 46 Dalits 46 North Cachar Hills 46 agitationists 46 Kashmir imbroglio 46 communal clashes 46 Khalistan movement 46 virulent insurgency 46 Kashmiri Muslims 46 ruling Left Front 46 Bastar 46 monkey menace 46 Lok Sabha polls 46 CPI Maoist 46 CPM cadre 46 Garo hills 46 BJD BJP 46 Chhatisgarh 46 PCJSS 46 sepoy mutiny 46 Dantewada 46 Comprehensive Peace Accord 46 Bhutan 46 terai region 46 Zeme Nagas 46 Kathmandu valley 46 Tamil Eelam LTTE 46 Leftist rebels 46 Islamist militants 46 Maoist CPI Maoist 46 Unified CPN Maoist 46 communal flare 46 Madhes agitation 46 Nepali 46 Uttar Pradesh 46 Gorkha Janamukti Morcha 46 Amarnath agitation 46 HIV Aids epidemic 46 raging insurgency 46 administered Kashmir 46 ragging menace 46 Comprehensive Peace Agreement 46 Bankura Purulia 46 counter insurgency 46 CPI M 46 CPI M cadres 46 autonomous Malay sultanate 46 Darjeeling hills 46 Lok Sabha elections 46 Kamal Dahal 46 warlords toppled dictator 46 Tibetan diaspora 46 Rolpa 46 separatists 46 Nagas 46 Dahal 46 Nepalese King Gyanendra 45 Kala azar 45 Nepal HURON 45 anti Naxal 45 Vizcatan 45 fratricides 45 Kapilvastu district 45 rebel Lord Resistance 45 Raman Singh 45 Red Shirt demonstrators 45 Hindu kingdom 45 separatist guerillas 45 eastern DR Congo 45 Hindu monarchy 45 paramilitary forces 45 revolutionary Mao Zedong 45 Ulfa cadres 45 resurgent Taleban 45 Kailali 45 Jungle Mahal 45 secessionist uprising 45 jana andolan 45 Prime Minister GP Koirala 45 Naxalite infested 45 Constituent Assembly 45 Bhutanese 45 crush Maoist insurgency 45 salwa judum 45 Rayagada district 45 communalism 45 King Birendra 45 Janaandolan II 45 Koshi floods 45 Lendu tribes 45 Madhes 45 LTTE 45 Tamil Tigers 45 Indo Nepal 45 Militancy 45 communal polarization 45 Khmer Rouge genocidal 45 Madhav Nepal 45 Red Shirt protestors 45 Karbis 45 Taleban militants 45 Kalahandi 45 Salva Judum 45 Yala Pattani 45 landless squatters 45 landlocked Himalayan 45 Bangladeshi infiltrators 45 Mahadhesis 45 Dispur 45 Naga 45 PM Dahal 45 sq km Bastar 45 AFSPA 45 Madheshi 45 Insurgent violence 45 Constituent Assembly CA 45 Terai plains bordering 45 hardline Islamist Taliban 45 Norwegian brokered truce 45 separatist Liberation Tigers 45 Mahottari district 45 CPI M cadre 45 internal dissensions 45 Girija Prasad Koirala 44 Maoist cadre 44 Jigme Singye Wangchuck 44 Karbi Anglong 44 Girijababu 44 Maoist supremo Prachanda 44 SPOs 44 Jajarkot 44 Maoist combatants 44 feudal monarchy 44 Norwegian brokered ceasefire 44 Dr Bhattarai 44 chieftaincy conflicts 44 Islamic militants 44 Naxal sympathizers 44 ULFA cadres 44 Bengali settlers 44 Sepoy Mutiny 44 Tirap 44 Belgian colony 44 farwestern Nepal 44 Barsha Man 44 VDC secretaries 44 armed CPM cadres 44 king Birendra 44 Madhav Kumar Nepal 44 Andhra Pradesh 44 Gogoi 44 Kalikot 44 ULFA militants 44 innocent Kashmiris 44 Salwa Judum activists 44 subcontinent partition 44 Kanker districts 44 Naxals Maoists 44 casteism 44 stone pelting incidents 44 madhesis 44 Amarnath yatra 44 insurgency wracked 44 Maoist ultras 44 factional feud 44 clan feuds 44 Madhesh 44 Kashmiri separatists 44 Tripura 44 Tarun Gogoi 44 KLNLF 44 Shining Path rebels 44 agitations 44 naxal affected 44 dengue epidemic 44 Lord Resistance Army 44 monarchy abolished 44 dalits 44 Trinamool 44 ultra leftists 44 General Ne Win 44 Khanal 44 vexed Naga 44 proscribed CPI Maoist 44 Tarai districts 44 combating militancy 44 KATMANDU Nepal Nepal 44 prime minister Surya Bahadur 44 jehadi terrorism 44 authoritarian rule 44 Nepalese monarch 44 Nepalis 44 Ghatshila sub division 44 Karnali zone 44 Ghisingh 44 Chattisgarh 44 civil strife 44 Norway brokered truce 44 Prime Minister Girija Prasad 44 eastern DRC 44 separatist Tamil 44 disputed Himalayan 44 Khmer Empire 44 Separatist guerrillas 44 Telangana agitation 44 panchayat polls 44 Koirala 44 Dahal Prachanda 44 UML cadres 44 ex Kamaiyas 44 Gyaneshwari Express derailment 44 Sikkim 44 separate Gorkhaland 44 Lendu militias 44 Kathmandu 44 naxal infested 44 Arunachal Pradesh 44 Dr. Baburam Bhattarai 44 Kumaratunga 44 scenic Swat valley 44 Prime Minister Ranil Wickremesinghe 44 Situala 44 raging cholera epidemic 44 Maoist strongholds 44 factional clashes 44 Dimasa 44 divided Himalayan 44 West Singbhum 44 dissidence 43 militants 43 stone pelting mobs 43 Rolpa district 43 Dashain festival 43 CPM cadres 43 Chechen separatism 43 Sitaula 43 terai districts 43 ethnic Assamese 43 held Kashmir IHK 43 BJD BJP alliance 43 Lhotshampas 43 loktantra 43 Nitish Kumar 43 Orissa 43 NSCN IM 43 Tibetan uprising 43 outlawed Communist Party 43 freed Kamaiyas 43 Katawal 43 CRPF 43 BKIAF 43 Kanker Bastar 43 Thinley 43 anti Congressism 43 Kharsawan 43 CPN UML 43 factional strife 43 Koshi flood 43 separatist 43 Chhattisgarh Orissa Jharkhand 43 Rayalaseema region 43 separatist Tamil Tiger 43 Maina Sunuwar 43 Dantewada district 43 Tharus 43 Mahakali Treaty 43 Koshi River 43 Dimaraji 43 MPRF cadres 43 Aila cyclone 43 minister Kamal Thapa 43 Kashmiris 43 forested Bastar region 43 rampant graft 43 Nepal OHCHR Nepal 43 Rautahat 43 secessionist movement 43 Leftwing extremism 43 unpopular King Gyanendra 43 Pattani provinces 43 leftwing extremists 43 Jana Andolan 43 Kathmandu AsiaNews 43 GAM rebels 43 internecine clashes 43 Kenya postelection 43 Naxal cadres 43 Uttarakhand 43 Force IPKF 43 maintain communal harmony 43 minority Tamils 43 RPP N 43 Lalu Rabri regime 43 Assam Karbi Anglong 43 Tehri dam 43 Gadaria gang 43 checkpoint Maile 43 Free Aceh Movement 43 Nagaland 43 Mangalkot 43 Telangana agitations 43 Karbi tribals 43 leftwing ultras 43 monsoon floods 43 constituent assembly 43 Limbuwan 43 NDFB militants 43 UNMIN 43 CPN Unified 43 Dimasa militants 43 Naxalite cadres 43 landless laborers 43 Mufti Muhammad Sayeed 43 secessionist rebels 43 insurgents 43 ecological degradation 43 Mayawati 43 monga 43 Chhattisgarh Jharkhand Orissa 43 Trinamool Congress 43 torrential monsoon downpours 43 Bardiya district 43 Changlang districts 43 Act NREGA 43 Mahato 43 Islamist insurgents 43 Telangana 43 stubborn insurgency 43 districts Dantewada Bijapur 43 abolishing monarchy 43 Force CRPF 43 Manipur 43 Swat 43 UML Madhav Kumar 43 cholera epidemic 43 BJP 43 Subash Ghisingh 43 Manik Sarkar 43 Madheshis 43 menance 43 West Bengal Paschim 43 Krishna Prasad Bhattarai 43 anti naxal 43 lawlessness prevails 43 Narayanhiti royal palace 43 President Mahinda Rajapakse 43 NEPAL 'S 43 Sankhuwasabha 43 monarch Gyanendra 43 RPP Nepal 43 Arunchal Pradesh 43 Dailekh 43 Narayanhity royal palace 43 NLFT militants 43 Panchayat elections 43 Jewel Garlosa 43 Shining Path guerrilla 43 panchayat elections 43 Jana Andolan II 43 Mughal empire 43 Lokendra Bahadur Chand 43 Karbi tribes 43 Himalayan 42 Kamal Thapa 42 Naxalbari uprising 42 Prime Minister Pushpa Kamal 42 Siraha district 42 Malukus 42 Vidarbha 42 West Midnapore 42 Malangwa 42 Jail Bharo agitation 42 dethroned King Gyanendra 42 Sri Lanka minority Tamils 42 monarchical rule 42 crown prince Dipendra 42 Terai districts 42 Lalu Rabri rule 42 YSR loyalists 42 Prime Minister Sher Bahadur 42 Sarguja 42 CRPF troopers 42 Hindu nationalists 42 Syangja district 42 Bodoland 42 AGARTALA 42 Ranas 42 Janandolan II 42 Naxal infested areas 42 Diarrhoea outbreak 42 Pahadi 42 Subash Ghising 42 Mungiki menace 42 feudal autocracy 42 Kashmiri pandits 42 deposed King Gyanendra 42 Purulia Bankura 42 Malangawa 42 uprising 42 bloody communal riots 42 custodial disappearances 42 Okhaldhunga district 42 Sarguja district 42 Darjeeling 42 Spurious liquor 42 Taliban militants 42 rampant corruption 42 undivided Koraput district 42 Judum 42 West Midnapore Bankura 42 IoK 42 Karbi Anglong district 42 Charikot 42 king Jigme Singye Wangchuk 42 Narayanpur district 42 impoverished Arabian peninsula 42 Ghising 42 deadly cholera epidemic 42 Surya Bahadur Thapa 42 Narayanpatna 42 Ram Sharan Mahat 42 SBPAC 42 status quoist 42 Garo Hills 42 crown prince Paras 42 Gyanendra Shah 42 manual scavenging 42 forested interiors 42 RJD misrule 42 Mahantha Thakur 42 Malwa region 42 Dimasa tribals 42 Hindutva 42 HIV Aids pandemic 42 KATHMANDU Nepal 42 Muthanga 42 Ugandan rebels 42 Chittagong Hill Tracts 42 feuding warlords 42 Madhya Pradesh 42 Nepalnews 42 KP Sharma Oli 42 KBK region 42 Meghalaya 42 Rastriya Prajatantra Party 42 NDFB 42 President Chandrika Kumaratunga 42 Girija Babu 42 Madhesi parties 42 Gorkha Janmukti Morcha 42 rebellion 42 resurgent Taliban militia 42 CPN ML 42 Western Ghats 42 Rasht Valley 42 Hutu rebels 42 Bhagalpur riots 42 militancy infested 42 Gorkha Janmukti Morcha GJM 42 bloodiest insurgencies 42 banned CPI Maoist 42 Parajuli 42 endemic corruption 42 Bhim Rawal 42 DHD Jewel 42 Kamaiya 42 Bangalee settlers 42 KATHMANDU Nepalese 42 Dimasa tribes 42 VDCs 42 Narayanpatna block 42 Assamese 42 DPM Oli 42 Indo Naga 42 Tharu 42 Koya Commandos 42 Wangchuck dynasty 42 Santhal Pargana 42 Mahendra Nagar 42 factional feuding 42 Talibanisation 42 captive elephants 42 minister JB Patnaik 42 autocratic regime 42 Sindhuli district 42 Tamil civilians 42 Singye Wangchuk 42 Kishunji 42 NSCN cadres 42 Dandakaranya 42 Fulgencio Batista dictatorship 42 Ulfa militants 42 Assam Nagaland border 42 exiled Tibetans 42 monarchy 42 Tuareg rebellion 42 Loktantrik 42 Moro Islamic Liberation Front 42 entrenched vested interests 42 Arunachal 42 BNLF 42 Mahendranagar 42 Naxal outfits 42 Islamist insurgencies 42 Vikas Yatra 42 Assam Arunachal Pradesh 42 Nagaland Manipur 42 NSCN Isak Muivah 42 Vidharbha 42 Maoist supremo Pushpa Kamal 42 Tanahun district 42 Kalahandi district 42 ongoing Gujjar agitation 42 MPA cadres 42 underworld gangs 42 breakneck industrialization 42 King Jigme Singhye 42 GNLF supremo 42 Janjawid militias 42 Kandhamal 42 Army Staff CoAS 42 Minister Kamal Thapa 42 Rajapaksa 42 VVJM 42 MCC ultras 42 groupism 42 Haflong 42 Swat valley 41 humanitarian crises 41 Sherchan 41 Karnali 41 Okram Ibobi Singh 41 Makwanpur district 41 Darchula 41 Kaski district 41 spreading cholera epidemic 41 Tibetan plateau 41 Shah Dev 41 factional feuds 41 kashmiris 41 Saptakoshi river 41 Madhesi Janadhikar Forum 41 resurgent Taliban insurgency 41 KATHMANDU Maoist rebels 41 independent Assamese homeland 41 Marxist cadres 41 GNLF 41 worsening cholera epidemic 41 Bihar Sitamarhi district 41 Badri Prasad Mandal 41 Naveen Patnaik 41 Commission NHRC 41 UNITA rebel 41 JVP insurrection 41 Gorkha Janamukti Morcha GJM 41 suppress Kashmiris 41 Gyaneshwari Express tragedy 41 naxal infested areas 41 Bardiya 41 Prime Minister Surya Bahadur 41 Humla 41 Nepali King Gyanendra 41 Maoist infested 41 madhesi 41 panchayati 41 Kalikot district 41 Bal Bahadur Rai 41 Rupandehi 41 Hetauda 41 Rajendra Prasad Pandey 41 Madhesi Janadhikar Forum MJF 41 Gyawali 41 tribal belt 41 fratricidal war 41 Dantewara 41 Rajapakse 41 restive Bastar region 41 Thapa 41 PM Koirala 41 CRPF jawans 41 Pushpa Kamal Dahal Prachanda 41 INSEC 41 Kailali district 41 Subhas Ghising 41 Gen Katawal 41 Lamjung 41 Zoramthanga 41 top cocoa grower 41 Task Force STF 41 Maoist cantonments 41 Taleban 41 Bangladeshi infiltration 41 Blueline menace 41 NSCN factions 41 royalist 41 religious extremism 41 By Sudeshna Sarkar 41 Fazlullah 41 mosquito menace 41 Bhattacharjee 41 ethnic Madheshi 41 bloody internecine 41 bloodshed 41 impoverished Arabian Peninsula 41 Dhankuta 41 Hindu nationalist 41 ethnic Madhesis 41 postelection riots 41 fratricidal wars 41 Nord Kivu 41 Prime Minister Manmohan Singh 41 Belsand 41 BP Koirala 41 Sashastra Seema Bal SSB 41 internecine conflicts 41 sectarian strife 41 internecine fighting 41 Saptakoshi 41 Achham 41 Yubaraj Ghimire editor 41 Gegong Apang 41 Gorakhpur 41 Tirap Changlang 41 Samiti VJAS 41 Hindu fundamentalism 41 Netai massacre 41 Bodo Liberation Tigers 41 Singye Wangchuck 41 Charu Mazumdar 41 Ramesh Nath Pandey 41 Dumaria 41 adivasis tribals 41 cyclone Aila 41 extremism 41 Casteism 41 Koraput 41 Kalaiya 41 Al Houthi rebels 41 misrule 41 Singur agitation 41 adivasi 41 Sajik Tampak 41 Quit Kashmir 41 Nepal UNMIN 41 Jhal Nath Khanal 41 Gaffney Strangler 41 dynastic rule 41 Itahari 41 Prime Minister Jhalanath Khanal 41 Wickremesinghe 41 Ajit Jogi 41 JTMM cadres 41 Latehar 41 Dadua 41 BTAD 41 Dima Halam Daogah DHD 41 KATHMANDU Nepal Maoists 41 Gorkha Jan 41 Surendra Pandey 41 Rukmangad Katawal 41 Bamdev 41 Fretilin 41 Red Shirts 41 rhino poaching 41 Leninist UML 41 Vindhyas 41 Baluch nationalists 41 separate Bodoland 41 Okhaldhunga 41 undivided Bihar 41 KATHMANDU Jan 41 displaced Kashmiri Pandits 41 President Jamil Mahuad 41 ultras 41 eastern borderlands 41 Bansi Lal 41 Mohan Baidya Kiran 41 dreaded sandalwood smuggler 41 Yala provinces 41 disputed Himalayan region 41 Tibetan exiles 41 KLO militants 41 Vidharba 41 Operation Bajrang 41 Sher Bahadur Deuba 41 Dynastic politics 41 Khaplang faction 41 CRPF battalions 41 Kalapani 41 Rukum 41 Dalit 41 Ituri province 41 Palpa district 41 sectarian bloodshed 41 Kashmiri separatist 41 Djugu territory 41 Gen Musharraf 41 ULFA cadre 41 fratricidal clashes 41 CRPF personnel 41 Minister Raman Singh 41 cyclonic rains 41 stone pelting protestors 41 Mohan Vaidya 41 Singur Nandigram 41 Salwa Judum movement 41 Impoverished Tajikistan 41 Krishna Prasad Sitaula 41 UNLF 41 inter factional 41 Goghat 41 NDFB cadres 41 marauding militias 41 Taleban insurgents 41 fanatical Shining Path 41 dalit 41 Maoist politburo 41 Myagdi district 41 Katawal resisted 41 Kamtapur Liberation Organisation 41 eastern Congo 41 internal bickerings 41 Mithilanchal 41 Taliban 41 Kosi deluge 41 interethnic conflicts 41 multiparty democracy 41 Palamau 41 Maoist sympathizers 41 Cyclone Aila 41 Ibobi 41 separatist movements 41 Ta Krabey temples 41 al Houthi rebels 41 embattled King Gyanendra 41 Himachal Pradesh 41 West Midnapur 41 Jhalanath Khanal 41 unequal treaties 41 tribal regions 41 Bastar Narayanpur 41 Advani 41 GP Koirala 41 restive Himalayan 41 goonda raj 41 horned rhinoceroses 41 CPI M goons 41 Jammu 41 communalisation 41 hydra headed monster 41 Atal Behari Vajpayee 41 Operation Parakaram 41 Telangana statehood 41 Changlang 41 curbing militancy 41 paramilitary CRPF 41 HNLC cadres 41 Koiralas 40 HLPM 40 Lankan Tamils 40 PKK guerrillas 40 Singur 40 Kandhmal 40 enforced disappearances 40 Maoist plenum 40 eluding Jonathan Wilhite 40 Ghorahi 40 BJD 40 Naxalite outfits 40 Marxist insurgencies 40 teardrop shaped island 40 Tibetan exile 40 jungle hideouts 40 Sinhala chauvinism 40 Burdwan Bankura 40 Mangalkote 40 Subhash Nemwang 40 lawless Horn 40 Salwa Judum cadres 40 Manipuris 40 Sangh Parivar 40 Bundelkhand 40 abortive uprising 40 Nepal Sadbhavana Party 40 Bodos 40 Pattani Yala 40 jail bharo 40 dengue outbreak 40 territorial supremacy 40 RAIPUR 40 ethnic strife 40 delimitation exercise 40 andolan 40 Kosi river