Who has the power to declare war? As leaders use the word "war" in reference to Iran, here's what the Constitution says about Congress, the president and military authority.

The United States has officially declared war 11 times in the nation’s history, the first time for the War of 1812 and most recently for World War II. According to the U.S. Constitution, Congress has the exclusive authority to declare war,

On paper, declaring war is reserved for Congress. The Tonkin Gulf Resolution turned a constitutional requirement into a legislative habit of looking away.

The Constitution gives Congress the power to declare war, but in 1973, in the wake of the Vietnam War, Congress enacted the War Powers Resolution, or the War Powers Act, in an effort to share that power using collective judgment when deploying troops that also allows presidents to take action under certain circumstances,

Article 1 of the U.S. Constitution gives Congress the power to declare war, not the president. But most modern presidents and their legal counsel have asserted that Article 2 of the Constitution allows the president to use the military in certain situations without prior congressional approval – and have acted on that,

Add Yahoo as a preferred source to see more of our stories on Google. The president of Iran has stirred significant concern with recent comments about the country’s relationship with the United States, which he describes as a state of war. The remarks ...

Lawmakers, rather than exert their own authority, are set to beat back efforts in the Senate Wednesday and the House on Thursday to require a debate and vote to authorize Trump’s war.

The Republican's point crumbled when reporters pointed out what he'd JUST said. He then admitted it "was a misspoke."

Americans are concerned about the wisdom of President Donald Trump’s military adventures in Venezuela, but many are forgetting the illegality of his actions. A government is territorial and gains its powers from the people in the territory through a ...