Two high profile weapons systems are getting critical attention as the U.S. trades verbal barbs with Iran over the Iran's nuclear weapons program and its threat to close the Straight of Hormuz.
Romney runs attack ads against Gingrich, who says he's in the race until the GOP convention
About 300 arrested in daylong Occupy Oakland protests; police say some broke into City Hall
Gingrich had defended Cain against allegations of sexual misconduct.