[nashashmi]

Iraq war was the last declared war. Afghanistan war was also declared.

[mikkupikku]

Incorrect. The only times America has formally declared war were the War of 1812, the Mexican-American War, the Spanish-American War, World War I, and World War II.

In the case of the Barbary Wars, Vietnam War, the Iraq War and War on Terror / Afghanistan War, etc... congress approved military engagement but DID NOT issue a formal Declaration of War.

[microtonal]

You mean that they were special military operations? j/k

Interesting though, I never knew this.