Conflict
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Conflict
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Combatant 1
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Combatant 2
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Result
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World War I (1914–1918)
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Allied Powers France Britain
Russia (1914–17) Japan Italy (1915–18) United States (1917–18) Serbia Montenegro Belgium Romania (1916–18) Portugal (1916–18) Brazil (1917–18) Hejaz (1916–18) China (1917–18) Greece (1917–18) Siam (1917–18) Liberia (1917–18)
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Central Powers German Empire Austria-Hungary Ottoman Empire Bulgaria (1915–18)
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Victory
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World War II (1939–45)
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Allied Powers Soviet Union (from June 1941) United States (from December 1941) United Kingdom China France (1939–40, 1944–45) In exile for part of the war Poland Norway Netherlands Belgium Free France (1940–44) Luxembourg Greece Czechoslovakia Other important belligerents Canada India Australia New Zealand South Africa Yugoslavia Liberia Ethiopia Brazil Mexico Colombia Cuba Philippines Mongolia Co-belligerents Italy (1943–1945) Romania (1944–1945) Finland (1944–1945) Bulgaria (1944–1945)
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Axis Powers Germany Italy (1940–43) Japan Affiliate states Romania (1941–44) Hungary (from 1941) Bulgaria (1941–44) Thailand (1942–45) Client states Slovakia Croatia Manchukuo Mengjiang Albania Co-belligerents Finland (1941–44) Iraq (1941) Vichy France (1940–44) Active neutrality Soviet Union (1939–41) Spain (1941–44)
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Victory
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1980 Liberian coup d'état (1980)
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Liberia
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Faction of the Armed Forces of Liberia
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Coup attempt succeeds
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First Liberian Civil War (1989–1997)
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Liberian Armed Forces ULIMO ECOWAS UNOMIL (September 22, 1993 – September 12, 1997)
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NPFL INPFL Support: Libya
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NPFL Victory
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Sierra Leone Civil War (1991–2002)
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RUF AFRC West Side Boys Liberia
Supported by:
Libya
Burkina Faso
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Sierra Leone
United Kingdom
ECOMOG Forces
Executive Outcomes
Supported by:
Guinea
United States
UNAMSIL
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Defeat
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1998 Monrovia clashes (1998)
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Liberian Government (Taylor Loyalists)
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Johnson's Forces (ex-ULIMO-J) Limited involvement: Nigeria United States
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Partial victory of Charles Taylor
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Second Liberian Civil War (1999–2003)
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Liberian Government
RUF
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Rebel groups:
Supported by:
Sierra Leone
Guinea
United Kingdom
United States
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LURD/MODEL victory
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