Israel has upgraded its top-tier Arrow II missile defense, a Defense Ministry official confirmed Sunday, as the country girds for possible attacks from Iran and Syria.

Sensors, command and control equipment and radar have been enhanced to improve reach and accuracy, the official confirmed without elaborating. He would not say how many Arrow II batteries are deployed around the country and spoke on condition of anonymity because he was not authorized to discuss the military's preparations.

Israel has developed a network of air defense systems to parry various threats it sees from its enemies, including the Arrow, a joint project with the U.S., that is designed to shoot down incoming missiles launched as far away as Iran.

Separately, the Haaretz newspaper reported on Sunday that the Arrow has been configured to take down not only long-range missiles but projectiles fired from closer range, such as neighboring Syria or Lebanon.