Vet, lawmaker: 3,000 troops will not be enough for war against ISIS

(CNN) – President Barack Obama is sending up to 1,500 more soldiers to Iraq to train Iraqi and Kurdish forces to fight ISIS, in a deployment that would almost double the total number of American troops there to 2,900.

Iraq War veteran Rep. Adam Kinzinger, R-Illinois, says he is not surprised, and predicts more troops will be needed.

"I said at the beginning a few, maybe 1,000 troops as advisers and, you know, some air strikes are not going to stop this explosion of ISIS in the Middle East," Kinzinger said in an interview with CNN's "The Lead with Jake Tapper."

"This is going to be a long time war, and I think frankly it will going to end up taking more troops," he said. "The President really ought to just level and say 'Hey, this is a big deal. It's going to take a lot. I know you don't want to go back to Iraq, but here is what's at stake.'"

For more of our interview with Rep. Adam Kinzinger, check out the video above.