Iraqi troops, Shiite militias and Sunni tribes battled ISIS today for a third day on the outskirts of militant-held Tikrit, unable to advance farther on Saddam Hussein's hometown as roadside mines and suicide attacks slowed their progress. CBS News correspondent Holly Williams says nearly 30,000 troops and allied militia members are on the ground, according to officials -- the biggest offensive since ISIS swept across northern Iraq last year. How much, if any role the U.S. will play is in question.
Two dramatically different portraits of Boston Marathon bombings suspect Dzhokhar Tsarnaev are expected to emerge when prosecutors and Tsarnaev's lawyers give their opening statements at his federal death penalty trial. CBS News correspondent Elaine Quijano reports the trial, which begins today, is ...
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