A senior Hamas official was killed by a car bomb in the Syrian capital of Damascus on Sunday morning. Al Jazeera television named the man as Izz El-Deen Al-Sheikh Khalil and a Hamas official in Beirut confirmed that he had been killed in the blast. The television station said the blast happened in the al-Zahraa area of Damascus. It was not immediately clear who was responsible for the bombing, but a Hamas spokesman in Gaza immediately laid the blame at Israel's door, saying the assassination was "a cowardly crime by the Zionist Mossad." Israeli officials refused to comment on...