Newt Holds Court

Republican presidential candidates clashed Tuesday on when to pull U.S. troops from Afghanistan, how to approach a hostile regime in Iran and whether to accede to cuts in the Pentagon budget as they sought to define themselves on national security issues.

In the spotlight: Republican presidential candidates include Herman Cain, Newt Gingrich and Rep. Michele Bachmann applaud before Tuesday night’s debate begins at Constitution Hall in Washington. Much of the attention was focused on Gingrich.

Rick Perry and Herman Cain to be Tested Again at Tonight’s Debate

The Republican presidential campaign makes a stop in this key primary state Saturday for a debate on foreign policy and national security issues.

WATCH: Perry Messes Up Again as Cain and Romney Cruise

Republican presidential hopeful Rick Perry says he would eliminate three federal agencies. Just don’t ask him to name them.

Rick Perry ‘Not a Bit Worried’ about Debating Obama

Rick Perry on Sunday sought to reassure GOP primary voters concerned about his wobbly presidential debate performances, saying he would draw sharp distinctions with the Democratic incumbent in televised showdowns next year.

GOP Debate: Mitt Romney, Rick Perry Discuss Robert Jeffress and Religion

Former Massachusetts Gov. Mitt Romney says voters should not choose their president based on the candidate’s religious beliefs or the place where they worship.

Mormonism Is a Cult, Pastor Mark Driscoll Says

With Mitt Romney campaigning as one of the GOP front-runners for president, his Mormon religion is coming under increasing scrutiny.

Scrutiny on Cain Intensifies as Republicans Prepare for Tonight’s Debate

Herman Cain has risen fast. Now the question is: Will he fall?