Top 10 Countries That Disappeared In The 20th Century

Wars since 1900

A list of all wars in the 20th and 21st centuries, based on data by COW, Prio and UCDP. See the source page or the FAQ for more information. How many died because of warfare in the 20th and 21st century?

Name of War   ∨ ∧

	Years   ∨ ∧	Fatalities	Type	Mem.	Note
Eastern Ukraine War	2014 - 2015	4,398	1	[1]	U
South Sudan Civil War	2011 - 2015	4,416	1		U
Syrian civil war	2011 - 2015	129,546	1	[2]	U
Libyan Civil War	2011 - 2015	3,617	1	[3]	U
Yemeni Civil War	2009 - 2015	5,981	1		U
Nigerian Govt vs Boko Haram	2009 - 2015	13,601	1		U
Waziristan conflict	2007 - 2015	28,542	1		U
Mexican Drug War	2006 - 2015	11,465	2	[3]	U
Iraqi Insurgency	2004 - 2015	46,834	1	[9]	U
Afghanistan war	2001 - 2015	72,593	1	[5]	U
Turkey Gov vs Kurdistan Guerilla (PPK)	1984 - 2015	28,651	1	[1]	U
Sudan Government vs Militias	1983 - 2015	97,221	1	[1]	U
Somalia Civil War	1982 - 2015	51,701	1	[2]	U
Russia vs Chechnyan Secessionists and the Caucasus Emirate	1994 - 2014	23,389	1	[7]	U
Algeria Govt vs Islamic rebels, GIA, AIS, AQIM	1991 - 2014	20,658	1	[1]	U
Indian Govt vs Maoist Guerillas	1991 - 2014	7,198	1		U
Nagorno-Karabakh War	1990 - 2014	5,294	1	[1]	U
Northern Mali Conflict	1990 - 2014	2,784	1		U
Indian-Pakistani Dispute and Intrastate Insurgency in Kashmir	1984 - 2014	21,929	1	[13]	U
Ethiopian Govt vs Ogadeni Rebels - WSLF/ONLF/AIAI	1976 - 2014	23,382	1		U
Philippines Govt vs Mindanao Guerillas	1970 - 2014	17,692	1		U
Philippine Government vs CPP Guerrilla	1969 - 2014	24,804	1		U
Colombia Govt vs Guerillas Farc and ELN	1964 - 2014	26,877	1	[3]	U
Burmese Government vs Separatist Guerillas	1949 - 2014	53,707	1		U
Israel vs Palestine	1949 - 2014	15,216	1	[6]
Sectarian Conflict in the Central African Republic	2012 - 2013	5,735	1		U
Kivu Conflict	2006 - 2013	10,449	1		U
Lou Nuer vs Murle (Jonglei conflict)	2006 - 2013	3,362	2		U
al-Qaida vs USA and allies	2001 - 2013	7,649	1	[12]
Uganda Civil War	1980 - 2013	127,566	1	[1]	U
Mozambique Govt vs RENAMO and FRELIMO	1977 - 2013	115,888	1		U
Ethiopia vs Oromia rebels (OLF)	1977 - 2013	2,651	1	[1]	U
Tajikistan Govt vs Opposition	1992 - 2011	9,145	1
Senegal Civil War	1990 - 2011	1,657	1
Iran vs rebel groups (MEK,PJAK etc)	1979 - 2011	5,015	1	[1]	U
Chad Civil War	1966 - 2010	36,078	1		U
Peruvian Gvt vs Sendero Luminoso and MRTA	1965 - 2010	17,250	1	[1]
Sri Lankan Govt vs Tamil Militants (LTTE)	1984 - 2009	73,818	1	[8]	U
Burundi Civil War	1991 - 2008	15,651	1	[2]	U
Nepal Civil War	1996 - 2006	12,282	1	[1]	U
Southern Lebanon War	1990 - 2006	1,712	1	[4]
Indonesia Gvt vs Aceh Liberation movement	1990 - 2005	3,184	1		U
Civil War in Côte d Ivoire	2002 - 2004	1,371	1	[1]	U
Ituri Conflict	1999 - 2004	12,494	2		U
Iraq vs US led coalition	2003 - 2003	7,927	1	[10]	U
First and Second Congo Wars	1996 - 2003	80,018	1	[1]	U
Liberia Civil War	1989 - 2003	23,249	1	[2]	U
Congo Brazzaville Civil War	1993 - 2002	15,541	1	[1]
Angolan Gvt vs UNITA Guerilla	1975 - 2002	114,898	1	[1]
Sierra Leone Civil War	1991 - 2001	18,119	1	[2]
Eritrea vs Ethiopia	2000 - 2000	98,192	1	[1]
Afghanistan Civil War	1978 - 2000	546,703	1	[4]	U
Yugoslavia vs NATO Forces and UCK Guerilla	1998 - 1999	3,613	1	[5]
Indonesian Govt vs Fretilin - East Timor	1975 - 1999	76,623	1	[1]	U
Cambodian Govt vs Khmer Rouge	1979 - 1998	87,499	1		U
Northern Ireland, The Troubles	1971 - 1998	3,010	1	[4]
Hunde and allies vs Hutu, Banyarwanda	1993 - 1996	3,938	2		U
Iraq Government vs SCIRI	1982 - 1996	1,165	1
Iraq vs Kurdistan (KDP/PUK)	1982 - 1996	20,849	1	[1]	U
Iranian Govt vs KDPI	1966 - 1996	2,618	1	[1]	U
Bosnian Govt vs Serbian and Croatian Insurgents	1992 - 1995	29,103	1	[7]
Croatia vs Serbian Irregulars, Rep. Krajina	1992 - 1995	1,442	1	[3]
Guatemalan Civil War	1965 - 1995	45,392	1	[2]
North Yemen vs Secessionists	1994 - 1994	1,489	1
Rwanda Civil War (Hutus vs Tutsis)	1990 - 1994	507,754	1	[4]	U
Burmese Govt vs Communist Guerillas	1948 - 1994	17,700	1
Georgian Civil War	1992 - 1993	2,752	1
Indian Govt vs Sikh insurgents	1983 - 1993	14,551	1	[2]	U
Serbian Govt. vs Croatian irregulars	1991 - 1991	3,933	1
First Gulf War	1990 - 1991	23,946	1	[4]	U
El Salvador Gvt vs FMLN Guerrillas	1979 - 1991	51,809	1	[2]	U
Ethiopian Government vs EPRDF	1976 - 1991	56,003	1		U
Ethiopia vs Eritrean Separatists ELF/EPLF	1964 - 1991	168,510	1
Nicaragua Govt vs Contras	1981 - 1990	29,965	1	[1]	U
Lebanese Civil War	1975 - 1990	131,104	1	[7]
Sri Lanka Govt vs JVP	1971 - 1990	2,018	1	[1]
Romanian Revolution	1989 - 1989	909	1
Panama Coup and US Invasion	1989 - 1989	920	1
Western Sahara War	1975 - 1989	12,687	1	[1]
South Africa vs ANC	1981 - 1988	4,087	1
Iran vs Iraq	1980 - 1988	644,500	1	[5]
Sino-Vietnamese War	1978 - 1988	47,046	1
Namibia vs South Africa	1966 - 1988	10,000	1	[5]
Chadian-Lybian War (Aouzou Strip)	1987 - 1987	8,500	1
South Yemen Coup	1986 - 1986	10,000	1
Falklands War	1982 - 1982	964	1	[5]
Syrian Govt vs Muslim Brotherhood	1979 - 1982	2,075	1
Thai Govt vs CPT	1974 - 1982	3,425	1
Nicaraguan Gvt vs Sandinistas	1978 - 1979	10,000	1	[1]
Uganda vs Tanzania	1978 - 1979	3,847	1
Iranian Revolution	1978 - 1979	1,100	1
Rhodesian Government vs ZANU,ZAPU,PF	1967 - 1979	27,080	1	[3]
Vietnam vs Cambodia (Kampuchea)	1978 - 1978	32,500	1
Indonesian annexation of West Papua	1962 - 1978	8,700	1
Argentina: Civil War and Dirty War	1974 - 1977	4,677	1	[2]
Balochistan Insurgency	1974 - 1977	8,600	1
Chinese Cultural Revolution	1967 - 1976	2,050,000	1	[1]
Cambodian Civil War	1967 - 1975	250,000	1
Vietnam War	1965 - 1975	2,048,050	1	[7]
Angolan War of Independence	1961 - 1975	79,000	1	[1]
Turko Cypriot War	1974 - 1974	5,000	1
Mozambique War of Independence	1964 - 1974	13,500	1	[2]
Yom Kippur War	1973 - 1973	6,450	1	[1]
Chilean MIlitary Coup	1973 - 1973	2,095	1	[2]
Guinea Bissau War of Independence	1963 - 1973	15,000	1	[1]
Laos Civil War	1959 - 1973	21,500	1
Hutu Rebellion	1972 - 1972	153,000	1
Sudan Government vs Insurgents	1963 - 1972	10,000	1
Bangladesh War	1971 - 1971	50,000	1	[4]
Second Kashmir War	1964 - 1971	16,327	1	[2]
Israel vs Egypt	1969 - 1970	5,520	1
Nigerian Civil War	1967 - 1970	75,000	1	[2]
North Yemen Civil War	1962 - 1970	10,000	1
First Kurdish–Iraqi War	1961 - 1970	6,600	1
Football War Honduras vs El Salvador	1969 - 1969	2,107	1
The Six Day War	1967 - 1967	5,413	1	[1]
Dominican Republic Coup	1965 - 1965	4,027	1
Congo Crisis	1960 - 1965	7,175	1	[2]
First Rwanda Civil War	1963 - 1964	1,000	1
Vietnam Civil War	1955 - 1964	164,923	1
Sino-Indian War	1962 - 1962	2,105	1	[2]
Algerian War of Independece	1954 - 1962	184,886	1	[2]
Bizerte Crisis	1961 - 1961	1,394	1
Cameroonian Govt vs UPC	1960 - 1961	60,000	1
Indonesia vs PRRI, Permesta and Darul Islam	1953 - 1961	33,965	1
Cuban Revolution	1953 - 1961	1,205	1
1959 Mosul uprising in Iraq	1959 - 1959	2,000	1	[1]
Cameroon War of Independence	1957 - 1959	11,700	1
Tibetan Uprising	1956 - 1959	16,000	1
First Lebanese War	1958 - 1958	1,400	1	[1]
La Violencia	1948 - 1958	29,800	1
Malayan Civil War	1948 - 1957	10,845	1	[2]
Sinai War	1956 - 1956	2,142	1	[2]
Soviet Invasion of Hungary	1956 - 1956	3,171	1	[2]
Kenya, Mau-Mau vs UK	1954 - 1956	12,955	1	[3]
Tunisian war of Independence	1953 - 1956	2,000	1
Moroccan War of Independence	1953 - 1956	1,000	1
Taiwan Strait Crisis	1949 - 1954	10,025	1
Philippines, Huk rebels vs Govt	1946 - 1954	9,695	1
First Indochina War Comm. vs France	1946 - 1954	377,523	1	[2]
Korean War	1949 - 1953	995,025	1	[11]
Bolivian Revolution	1952 - 1952	1,000	1
Indian Govt vs Communist Rebels CPI	1948 - 1951	4,000	1
Soviet Union vs Baltic Partisans (’’Forest Brethren’’)	1945 - 1951	32,400	1
Indonesian Govt vs Republic of South Moluccas	1950 - 1950	1,000	1
Third Sino-Tibetan War	1950 - 1950	4,000	1
Cheju Rebellion in South Korea	1948 - 1949	17,000	1	[1]
Arab-Israeli War	1948 - 1949	21,111	1	[1]
Greece Civil War	1946 - 1949	154,000	1
Chinese Civil War	1946 - 1949	1,200,000	1	[1]
Costa Rican Civil War	1948 - 1948	2,000	1
First Kashmir War	1948 - 1948	7,500	1
Yemeni Imamate War	1948 - 1948	4,000	1
Telangana Rebellion and Indo-Hyderabad War	1947 - 1948	4,360	1
Civil War in Mandatory Palestine	1947 - 1948	4,009	1	[2]
Indian Partition Communal Violence	1947 - 1948	200,000	1
Taiwanese revolt	1947 - 1947	1,000	1	[1]
Madagascar Rebellion	1947 - 1947	6,952	1	[1]
Paraguayan Gvt vs Rebels	1947 - 1947	4,000	1
Poland and Soviet Union vs Ukrainian Partisans	1945 - 1947	59,700	1
Indonesian Independence	1945 - 1946	5,400	1
World War II	1939 - 1945	50,000,000	1	[36]
Franco-Thai War	1940 - 1941	1,400	1	[1]
Third Sino-Japanese War	1937 - 1941	1,000,000	1	[6]
The Winter War in Finland	1939 - 1940	151,798	1	[1]
The battle of Khalkhin Gol	1939 - 1939	28,000	1
Arab revolt in Mandatory Palestine	1936 - 1939	2,576	1
Second British-Waziristan	1936 - 1939	10,200	1
Spanish Civil War	1936 - 1939	466,300	1	[1]
Changkufeng Incident	1938 - 1938	1,726	1
Italo-Ethiopian War	1935 - 1936	20,000	1
Chaco War	1932 - 1935	92,661	1
Communists vs Koumintang	1930 - 1935	500,000	1
Spanish Socialists vs Govt	1934 - 1934	1,335	1
Saudi-Yemeni War	1934 - 1934	2,100	1
Xinjiang Muslim Revolt	1931 - 1934	21,000	1
Manchurian War	1931 - 1933	60,000	1	[2]
El Salvador, La Matanza	1932 - 1932	2,600	1
Aprista Revolt in Peru	1932 - 1932	1,100	1
Brazilian Revolt	1932 - 1932	1,000	1
Saya San Rebellion	1930 - 1932	1,140	1
Senussi Orden vs Italy	1920 - 1932	40,000	1
The Yên Bái Uprising	1930 - 1931	1,000	1
Ikhwan Revolt	1929 - 1930	5,500	1
Kuomintang vs warlords	1929 - 1930	75,000	1
Escobar Rebellion	1929 - 1929	2,000	1
Sino-Soviet war	1929 - 1929	3,200	1
Second Afghan Anti-Reform War	1928 - 1929	15,000	1
The Cristero War	1926 - 1929	10,000	1
Kuomintang vs Gansu Rebels	1928 - 1928	200,000	1
Northern Expedition	1926 - 1928	126,500	1
Druze revolt	1925 - 1927	6,000	1
Third Chinese Warlord War	1925 - 1926	1,000	1
Third Rif War	1920 - 1926	70,000	1
Afghan rebels vs govt	1924 - 1925	2,000	1
Nejd-Hejaz Wars	1919 - 1925	4,000	1
Honduras Coup	1924 - 1924	1,000	1
Soviet-Turkestan War	1921 - 1923	3,500	1
Second Chinese Warlord War	1922 - 1922	20,000	1
Ireland freestaters vs Irregulars	1921 - 1922	4,000	1
Moplah Riots in Kerala	1921 - 1922	2,450	1
Blackshirts vs Leftists	1920 - 1922	3,300	1
Second Greco Turkish War	1919 - 1922	50,000	1
Russian Revolution and Civil War	1917 - 1922	802,225	1	[1]
Kronstadt Rebellion	1921 - 1921	2,600	1
Green Rebellion	1920 - 1921	6,700	1
Conquest of Mongolia	1920 - 1921	4,000	1
Iraq vs UK	1920 - 1921	9,540	1
Turkish War of Independence	1919 - 1921	40,000	1
Lithuanian-Polish War	1920 - 1920	1,000	1
Franco-Syrian war	1920 - 1920	3,500	1	[1]
First Chinese Warlord War	1920 - 1920	35,000	1
Polish-Soviet War	1919 - 1920	100,000	1
First British-Waziristan War	1919 - 1920	2,000	1
Hungary Civil War	1919 - 1920	1,500	1
Caco Revolt	1918 - 1920	2,102	1
Estonian Liberation War	1918 - 1920	11,750	1	[2]
Latvian Liberation	1918 - 1920	13,246	1
Mexican Revolution	1910 - 1920	125,000	1	[1]
The Dervish State vs Ethiopia, Britain and Italy	1899 - 1920	6,000	1
Hungarian–Romanian War of 1919	1919 - 1919	11,000	1
Third Anglo-Afghan War	1919 - 1919	2,136	1
Sparticist Rising	1919 - 1919	2,170	1
Second Sino-Tibetan	1918 - 1918	1,500	1
Finnish Civil War	1918 - 1918	15,150	1	[1]
Southern China Revolt	1915 - 1918	1,000	1
World War I	1914 - 1918	10,670,868	1	[12]
Russia-Turkestan	1916 - 1917	1,350	1
Chinese Govt vs Bai Lang (White Wolf) Rebels	1914 - 1914	5,000	1
Moro Rebellion	1913 - 1913	15,050	1
2nd Balkan War	1913 - 1913	60,500	1
Kuomintang vs Chinese Army	1913 - 1913	5,000	1
1st Balkan War	1912 - 1913	82,000	1	[1]
First Sino-Tibetan War	1911 - 1912	2,000	1
Italo-Turkish War	1911 - 1912	20,000	1
Paraguay Coups	1911 - 1912	5,000	1
Cuba vs Partido Independiente de Color	1911 - 1911	1,050	1
Chinese Revolution	1911 - 1911	1,000	1	[2]
Asir-Yemen Revolt	1910 - 1911	9,000	1
French Conquest of Wadai Sultanate	1909 - 1911	12,000	1
The second Rif War	1909 - 1910	10,000	1
Ma al-’Aynayn’s Anti-Colonial Insurgency	1907 - 1910	3,150	1
Korean guerilla war against Japanese occupation	1907 - 1910	17,736	1
Portugese war against Dembos	1907 - 1910	5,100	1
Iranian Constitution War	1908 - 1909	1,100	1
Morocco unrest	1907 - 1908	1,400	1
4th Central American war	1907 - 1907	1,000	1
Romanian Peasant Revolt	1907 - 1907	2,000	1
Dutch-Achinese War	1904 - 1907	24,200	1
Zulu Rebellion	1906 - 1906	2,356	1
Third Central American war	1906 - 1906	1,000	1
Sokoto and UK vs Mahdist Revolt	1906 - 1906	2,080	1
Russian Revolution 1905	1905 - 1906	1,500	1
Maji Maji revolt	1905 - 1906	8,840	1
Southwest African Revolt	1904 - 1905	12,800	1	[1]
Russo-Japanese war	1904 - 1905	151,831	1	[1]
Uruguay Civil War	1904 - 1904	1,000	1
Second Yemen Rebellion	1904 - 1904	30,000	1
Uprisings in Colonial Angola	1902 - 1904	2,000	1
Ilinden Uprising	1903 - 1903	6,330	1
The War of a Thousand Days	1899 - 1903	100,000	1
Philippine insurrection	1899 - 1902	20,500	1
Second Boer war	1899 - 1902	30,800	1
The Boxer Rebellion	1900 - 1900	3,003	1
Sino-Russian War	1900 - 1900	4,000	1