US authorities added the name of the Boston bombing suspect Tamerlan Tsarnaev to a terrorist database 18 months before the explosions, but did not follow up their inquiry.
Officials say the CIA made the request to add Tamerlan's name after the Russian government contacted them with concerns he had become a follower of radical Islam.
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The Scottish Government is set to get control over income tax and a raft of other new powers under plans agreed by the Smith Commission.
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Leaders Live: UK needs to treat drug misuse as a health issue and not a criminal one, leader of the Green Party Natalie Bennett has said.