“He talks tough on some of these issues, for example he’s going to carpet bomb ISIS. But the only budget he’s ever voted for in his time in the Senate is a budget that cut defense spending by more than Barack Obama proposes we cut it,” Mr. Rubio said on NBC’s “Meet the Press.”

“My point is each time he’s had to choose between strong national defense and some of the isolationist tendencies in American politics, he seems to side with the isolationists. This is an important issue to have a debate over. It’s not personal,” the Florida senator said.