Invading and killing people.
Actually, liberating Russians in the Dombass and Crimea regions who were subject to genocidal attacks by the dancing homosexual comedian since the corrupt US gov't staged its coup in 2014.
You got a serious case of the dumb dumbs. There is a treatment you could try. It is called The Duran. The how the where the who, etc about this money laundering war.
Do you refer to the US military in Syria currently, or NATO's bombing of Kosovo during the Clinton administration? So many more similar questions as regards "invading and killing people."
How many in Iraq did we kill directly and indirectly? Not 1991 but George’s follies. We never admit to our own mass killings. How many in our Libya folly.