Lindsey Graham: “What he has done is he's made that argument now, front and center.”

A cyber attack against the United States would be an act of war, and we shall respond in kind.

You don't want to recognize a terrorist group who takes land by force.

We're leaving thousands of Afghan allies behind who fought bravely with us.

If you invade the Ukraine, you will destroy the ability of future presidents to treat you and Russia as normal.