Congress hasn't officially declared war since 1942. Presidents launched these 11 military operations anyway.

Richard Nixon conducted a secret bombing of Cambodia without Congressional approval in 1970. Bettmann Archive/GettyImages Both houses of Congress have advanced War Powers resolutions in the wake of the war with Iran. Presidents have repeatedly ordered military operations without Congress since WWII. In some instances, lawmakers have checked the president's power in response. A week ago, the United States' and Israel's war against Iran passed the 100-day mark. In the more than three months s...