While the Iron Dome and David’s Sling systems offer complementary protection, they offer it from fairly different threats. Iron Dome’s anti-rocket batteries are used against rockets fired by Hezbollah and Hamas, cheap and simple weapons characteristic of asymmetric warfare. By contrast, David’s Sling is most useful against larger, expensive weapons, ones that almost always require a nation's backing. Historically, Israel has been involved in state-to-state warfare with all of its neighbors and many other countries in the region, but currently the Air Forces of most of Israel’s neighbors and former foes are occupied elsewhere. Syria’s brutal dictator Assad is embroiled in a civil war against many parties, including the horrific ISIS. Iraq, which under Saddam Hussein had hurled cruise missiles at Israel during the Gulf War, is also actively involved in the fight against ISIS. Egypt, which fought several wars against Israel between 1948 and 1973, has been formally at peace with Israel since 1978. Jordan, similarly, has a peace treaty going back decades.