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Obama would consider Russia's chemical weapon proposal

The CBS News Roundup: President Obama says he's willing to take a look at Russia's proposal to place Syria's chemical weapons under international control to avert a U.S. military strike; George Zimmerman was questioned by Florida after his estranged wife called 911; Dennis Rodman plans to stage two exhibition basketball games in North Korea -- all this and more. Alexander Trowbridge reports on the news you need to know.