Whom will the west force to do what? One has to assume that the west should no, which sanctions do harm more the people of Iran, than its leaders and their politics. And an other question is, why are not human-rights are the cause the West is dealing in this case?
Saudi-led coalition air strike kills around 30 Yemeni civilians (Reuters)
from the article: France's Sarkozy: Military strike on Iran would trigger Middle East war