First: Barack Obama and Joe Biden are teaming up again to promote one of their biggest accomplishments. We have details on their rare White House reunion and whether the former president can help the current one get reelected. 

Plus: The US and Israel are no longer in lock step on how to prosecute the war against Hamas terrorists. 

And: Republican candidates have one month left to make their case to Iowa voters. Nikki Haley just agreed that the CNN debate stage will be one of her final stops. 

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