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PM visits Boston bomb site

David Cameron has visited the site of the Boston Marathon bombings before travelling to New York where he and Prince Harry will meet American business leaders.

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Obama: We will 'increase pressure' on Syria

David Cameron and Barack Obama during a White House press conference. Credit: Reuters

President Barack Obama said he would continue to work to establish facts about whether chemical weapons have been used in Syria.

He said the US will continue to "increase pressure" on the regime and "strengthen the opposition."

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