"Mohamed ElBaradei, head of the International Atomic Energy Agency (IAEA), said Monday that Arab nations believe that Israel has undermined the Non-Proliferation Treaty (NPT) and this is a major obstacle to nuclear disarmament.

"What compounds the problem is that the nuclear non-proliferation regime has lost its legitimacy in the eyes of Arab public opinion because of the perceived double-standards concerning Israel, the only state in the region outside the NPT and known to possess nuclear weapons," he wrote in The Herald Tribune.

Israel is largely believed to posses the only nuclear arsenal in the Middle East and has refused to sign the NPT or put its nuclear facilities under the UN supervision.

Former US president Jimmy Carter confirmed in May 2008 that Israel has 150 nuclear weapons in its arsenal. "

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