The U.N. Security Council called early on Sunday for an immediate halt to all violence in Gaza after a day of Israeli air strikes in response to rocket and mortar fire by Gaza militants against Israel, Reuters reported "The members of the Security Council expressed serious concern at the escalation of the situation in Gaza and called for an immediate halt to all violence," said the statement, read to reporters by Croatian Ambassador Neven Jurica, president of the council. "The members called on the parties to stop immediately all military activities."