State Hillary Clinton says Iran's nuclear ambitions are putting the world at risk

United State Secretary of State Hillary Clinton says Iran's nuclear ambitions are putting the world at risk.

She told delegates at a nuclear Non-Proliferation Treaty conference at the UN that Iran should be held to account.
Mrs Clinton also said the US will disclose the number of weapons in its nuclear arsenal, a closely guarded secret for more than half a century. 
Adding that the move was to improve transparency in the nuclear disarmament regime and encourage other nations to comply with it.