>>> hello, john vause at the cnn center. our coverage of the first anniversary of the japanese earthquake and tsunami begins in just a moment, but first a look at the other headlines. this video shows a rebel sniper taking aim at a syrian armored vehicle. cnn cannot confirm the video's authenticity. activists say at least 63 were killed across syria on saturday. a special envoy plans more talks today with syrian president assad. he rejected the call for a cease-fire on saturday. palestinian medical sources say one person was killed by another israeli air strike in gaza early sunday. the armed wing of hamas vows it to retaliate for the bombings that killed 16 people since friday. they blame hamas for dozens of roktd attacks over the weekend. police in kenya say an apparent grenade attack left three people dead and wounded 40 others. authorities say they expect the terror group is behind the blast. so far, though, no claim of responsibility. chalk up another victory for rick santorum. the u.s. republican presidential candidate

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