Rand Paul sharply criticized fellow Senate Republican Lindsey Graham for suggesting that U.S. troops should remain in northern Syria.

"Lindsey Graham has been wrong about almost every foreign policy decision of the last two decades," the Kentucky senator said during a Tuesday morning appearance on MSNBC. "He was wrong about the Iraq War. The Iraq War was a mistake. It made Iran stronger, allowed more chaos, more instability, and more terrorism. He was wrong about the war in Libya. It lead to more chaos and more terrorism. He is wrong about this."

Paul was referring to tweets from the South Carolina senator that condemned the White House's decision to remove U.S. troops from northern Syria.

"Our southern border should be our LAST line of defense against radical Islam. Our FIRST line of defense is the U.S. military working with partners in radical Islam's backyard keeping them over there so they can't hurt us here at home or hurt our allies like Israel," Graham said on Monday. "This is the exact thinking of the previous Administration — leave them alone and let others do our work. It led to the rise of ISIS! Didn't work then. Won't work now."

Our southern border should be our LAST line of defense against radical Islam.

Our FIRST line of defense is the U.S. military working with partners in radical Islam's backyard keeping them over there so they can't hurt us here at home or hurt our allies like Israel.

— Lindsey Graham (@LindseyGrahamSC) October 14, 2019

Graham's tweets were accompanied by the release of his official statement supporting Trump's assertion that he would be imposing sanctions on Turkish officials and the country's economy in the wake of their invasion of northeastern Syria.

"I strongly support President Trump's decision to initiate executive order sanctions against Turkish officials and economy for Turkey's invasion of northeastern Syria," Graham said in a statement. "Turkey is attacking the Kurdish forces that supported us the most in destroying the ISIS Caliphate."