North Korea is the only one. While military operations are ongoing in Afghanistan and Iraq, the US no longer considers itself at war with the nation of Iraq, nor was war ever declared on Afghanistan itself.
The US has invaded several countries during the War on Terror in whole or in part, but the two most prominent such invasions were in AFGHANISTAN and IRAQ.
The main countries involved in the Cold War were the US and the USSR.
Spain and the US.
the two counties that went to war were Germany and the US.
Us & uk.
Germany and Japan
Japan and Germany .
To help out other countries
U.K. and italy
afghanistan and Iraq
Japan & Germany .
Russia and the US .