Qatar has called for intensified international efforts to bring Israel's nuclear facilities under the safeguards of the International Atomic Energy Agency (IAEA) and for Israel to join the Treaty on the Non-proliferation of Nuclear Weapons (NPT) as a non-nuclear state. Israel has never formally admitted possessing nuclear weapons, but its nuclear capability has been an open secret for decades. Israel's estimated stockpile of 90 warheads is not large, certainly not when compared with Russia's 4,380 and America's 3,708. Qatar's initiative is seen as a serious attempt to introduce the issue of Israel's nuclear arsenal into the Gaza talks.