Poll: Santorum surges, Obama leads Republicans (AP)

AP - A surging Rick Santorum is running even with Mitt Romney atop the Republican presidential field, but neither candidate is faring well against President Barack Obama eight months before Americans vote, a new survey shows.

US softens stance on arms for Syria rebels (AP)

AP - The Obama administration opened the door slightly Tuesday to international military assistance for Syria's rebels, with officials saying new tactics may have to be explored if President Bashar Assad continues to defy pressure to halt a brutal crackdown on dissenters.

GOP 'super PACs' overtaking campaigns' fundraising (AP)

AP - An unmistakable dynamic is playing out in the money game among Republican presidential candidates: New "super" political action committees are growing more powerful than the campaigns they support.