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Countries that Have Formally Declared War Since WW2

Includes unrecognized countries which control or controlled territory
Source: https://en.wikipedia.org/wiki/Declaration_of_war#Declared_wars_since_1945
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SomeNerd
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Last updated: April 22, 2026
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First submittedAugust 24, 2022
Times taken3,046
Average score68.3%
Rating4.40
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Date:
Declaring Party:
Opponent:
15 May, 1948
Egypt
Israel
Iraq
Jordan
Lebanon
Syria
June 1967
Mauritania
13 July, 1977
Somalia
Ethiopia
2 November, 1978
Tanzania
Uganda
22 September, 1980
Iraq
Iran
15 December, 1989
Panama
United States
14 May, 1998
Ethiopia
Eritrea
24 March 1999
Yugoslavia
Belgium
Canada
Denmark
France
Germany
Italy
Netherlands
Norway
Portugal
Spain
Turkey
United Kingdom
United States
23 December, 2005
Chad
Sudan
13 June, 2008
Djibouti
Eritrea
9 August, 2008
Georgia
Russia
11 April, 2012
Sudan
South Sudan
27 September, 2020
Azerbaijan
Armenia
14 November, 2020
Western Sahara
Morocco
8 October, 2023
Israel
Hamas
27 February 2026
Pakistan
Taliban
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8 Comments
SomeNerd
+3
Level 68
Mar 3, 2024
Update: added several countries and fixed formatting
Eutychus
+9
Level 94
Apr 24, 2024
Today I learned about Ambazonia.
TheKnowledge122
+1
Level 49
Jul 13, 2024
I think you're missing Ukraine and Russia.
SomeNerd
+6
Level 68
Jul 13, 2024
Neither Russia nor Ukraine have issued formal declarations of war.

https://en.wikipedia.org/wiki/Declaration_of_war#Russo-Ukrainian_War

mrputter
+3
Level 89
Jul 14, 2024
Well, I missed precisely one answer here. No prizes for guessing what it was.

Off to Wikipedia to learn something about a place I've never heard of before...

AlmostAGenius
+2
Level 89
Feb 25, 2026
Hmm... Didn't even bother guessing the U.S. because I knew they hadn't declared war since WWII. Should have considered that it might go the other way...
hwes
+3
Level 89
Feb 25, 2026
How can Israel declare war on a state and/or government they don't recognise? Does this mean they recognise the existence of Palestine?
ooftownroad
+1
Level 70
Feb 25, 2026
Could you accept SADR for Western Sahara?
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