This image made from amateur video and released by the Syria media center Thursday, March 29, 2012, purports to show black smoke riding from buildings in Homs, Syria. Syrian President Bashar Assad says he will spare no effort to make the mission of U.N.-Arab League envoy Kofi Annan a success but he demands that armed opponents commit to halting violence. (AP Photo/Syria Media Center via APTN) THE ASSOCIATED PRESS CANNOT INDEPENDENTLY VERIFY THE CONTENT, DATE, LOCATION OR AUTHENTICITY OF THIS MATERIAL. TV OUT
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