The Obama administration has also broken a long-standing taboo against discussing Israel's nuclear weapons, by calling for Israel to declare and give up its weapons arsenal, said to number around 50 warheads. A senior State Department official said the US wants Israel to sign the nuclear Non Proliferation Treaty and commit to disarmament. What he has not done yet, is query the $3 billion in military aid which US taxpayers send Israel every year, although that could yet happen given the straitened times.