Two US citizens killed in Istanbul suicide blast: White House

Two US citizens were among those killed in a suicide blast that tore through a major shopping district in Istanbul on Saturday, the White House said. Four people died in the bombing early Saturday, with local authorities and media saying the victims included three Israelis and one Iranian. "The United States condemns in the strongest possible terms today's terrorist attack in Istanbul, Turkey," National Security Council spokesman Ned Price said in a statement.