Mustafa Barghouti: 'Occupation responsible for attack'
Palestinian official Mustafa Barghouti has said that "today is a failure of the international community" after a deadly attack at a West Jerusalem synagogue.
Four Israelis were killed and eight injured by two armed men - Israel has vowed to respond "with a heavy hand".
Mr Barghouti told BBC News that "violence is useless" but blamed the "continuance of the occupation".