sentences:  During the 2006 Lebanon War, the United States provided a major resupply of jet fuel and precision-guided munition to replenish depleted Israeli stocks.The United States and Israel cooperate closely in a number of areas of military activity.The U.S. underwrites some of Israel's research and development of weapons, and has contributed significant amounts of money to Israeli defense projects such as the Merkava main battle tank and the IAI Lavi ground-attack aircraft.