President Barack Obama tore into Republican presidential candidates Monday night at a Democratic fundraising event in New York, saying their complaints about CNBC's debate moderation aren't an encouraging preview for their governing abilities. "Have you noticed that everyone of these candidates say, 'Obama's weak. Putin's kicking sand in his face. When I talk to Putin, he's going to straighten out,'" Obama said, impersonating a refrain among Republican candidates that he's allowed Russian President Vladimir Putin too much leeway. "Then it turns out they can't handle a bunch of CNBC moderators at the debate. Let me tell you, if you can't...