However, Hezbollah is supplied by Syria and Iran, both of which have much more capable weaponry, including large truck-mounted air defense systems. For decades, there have been many rumors of Hezbollah being supplied with various advanced systems, none of which have been confirmed. Consequently, Hezbollah's air defenses are usually considered poor, but there is also enormous uncertainty and disagreement over what weapons they possess. In 2008, the Israeli Defense Intelligence assessed that "Hizballah's anti-aircraft weapons can hit Israeli helicopters or unmanned aerial vehicles (UAV's), but not yet manned aircraft."