Iranian nuclear program and the international legislation

Lately Iran, its nuclear program, capacity for creating nuclear weapons and the surmised attack of Israel and the USA have been in the thick of the global politics. Discussion of these essential points has become a kind of a betting shop, where venturesome political analysts place their bets for the sheer timing of attack. It is weird that at the same time no one analyzes the legal aspect of Iranian nuclear weapon and the threat of using military force against it.