Israel's Army Radio reported on [July 7] that the United States has sent Israel a secret document committing to nuclear cooperation between the two countries. The U.S. has reportedly pledged to sell Israel materials used to produce electricity, as well as nuclear technology and other supplies, despite the fact that Israel is not a signatory of the Nuclear Non-Proliferation Treaty. Other countries have refused to cooperate with Israel on nuclear matters because it has not signed the NPT, and there has been increasing international pressure for Israel to be more transparent about its nuclear arsenal. Army Radio's diplomatic correspondent said the reported offer could put Israel on a par with India, another NPT holdout which is openly nuclear-armed but in 2008 secured a U.S.-led deal granting it civilian nuclear imports. Israel neither confirms nor denies having nuclear weapons under an ambiguity" strategy billed as warding off foes while avoiding public provocations that can spark regional arms races. The official reticence, and its toleration in Washington, has long aggrieved many Arabs and Iranians - especially given U.S.-led pressure on Tehran to rein in its nuclear program.