Would you be sure that Iran, if it had a Nuclear weapon , that...

Would you be sure that Iran, if it had a Nuclear weapon , that it would not use it against Israel ?

I'm not sure that it would not use the weapon---and I think Israel thinks the same.

The US,China, Russia, UK, Germany and France are all telling Iran to cease their nuclear program---and Iran is refusing to cease.

I can't see Israel and the above nations backing off--nor can I see Iran backing off.

This is a stalemate for the moment, but rather concerningly
it can't remain one.