Republican Arizona Senator John McCain slammed Republican Kentucky Senator Rand Paul on Sunday, accusing Paul of being part of “fortress America.”

According to The Huffington Post, McCain was weighing in on a war of words between the Kentucky senator and Republican Texas Governor Rick Perry.

Last month, Paul argued in The Wall Street Journal that the U.S. should stay out of Iraq despite the current crisis in the country.

“Many of those clamoring for military action now are the same people who made every false assumption imaginable about the cost, challenge and purpose of the Iraq war,” Paul wrote. “They have been so wrong for so long. Why should we listen to them again?”

On Friday, Perry made his case in The Washington Post that isolationism is not the correct choice in this rapidly developing situation. “We live in a world where isolationist policies would only endanger our national security even further,” Perry wrote in his op-ed.

McCain, a veteran of the Vietnam War, also went on the offensive against Paul’s call for isolationism.

“Senator Paul is part of a wing of the party that’s been there ever since prior to World War I in our Republican Party, and that is a withdrawal to fortress America,” McCain said on CNN’s State of the Union.

“I’m not particularly interested in getting between Senator Paul and Governor Perry, but I do believe that the things we’re seeing in the world today, in greater turmoil than at any time in my lifetime, is a direct result of an absence of American leadership.”

Who do you agreed with? Should the U.S. get involved in the Iraq crisis or should we let the country deal with this problem on its own? Sound off in the comments section.