Iran either won't get nukes eventually, or they will. No other possibilities. Which is the more likely? Of course that they will. If nothing else, Pakistan (largely ruled by Shias) will be their cause or motive. So why is every action taken by the west done with the assumption that we must only invest in strategic plans that involve the unlikely? Thousands of years ago cavemen would approach their neighbors, throw rocks, and run. Then they graduated to spears and perhaps molotov cocktails (gourds filled with swampwater). Eventually one of the smarter cavemen sent a pretty girl to the enemy, a diplomat and a deal was made. So now, today, politicians say that the first step in solving the problem is to not have diplomatic ties and to avoid any direct high level contact? War is approaching and Israel is not likely to survive as it is.
Jerusalem suburb of Even Sapir evacuated as wildfire spreads (Haaretz)
from the article: Iran pushes foward plan to review ties with UN nuclear watchdog