The feud between Vice President Joe Biden and former Vice President Dick Cheney heated up this weekend.

The White House sent Biden to appear on two Sunday talk shows after administration officials found out that Cheney was going to be on one of them. The two men mainly squared off over the war on terror.

"The President of the United States said in the "State of the Union," we're at war with al Qaeda," Biden said on NBC's Meet the Press. "He said this and by the way, we're pursuing that war with a vigor like it's never been seen. We've eliminated 12 of the top 20 people, we have taken out 100 of their associates. We've sent them underground."

However, Cheney targeted the Obama administration for its mindset, saying Biden is "dead wrong" to argue that a new 9/11-style attack is unlikely.

"It's the mindset that concerns me," Cheney said on ABC's This Week. "It's very important to go back and keep in mind the distinction between handling these events as criminal acts as we did before 9-11 and then looking at 9-11 and saying you destroyed 16 acres, 3,000 people. It's an act of war."

Cheney says a nuclear or biological attack by al Qaeda is "the biggest strategic threat the United States faces today."