Bomb Iran. and then provoke Iranian retaliation? did israel and United States have enough military strength, and more importantly, political strength to undermine Iran? what bombing could achieve? just a temporary setback in iran nuclear program. on the other hand, Iran are held in hostage the thousands of US troops in Iraq. Iran deliberately held back the Shiite militia and if Iran unleash the shiites militias in Iraq, they'll completely cutoff coalition main supply line from kuwait. beside that, Iran with it's large ballistic missile arsenal can rain down hundreds of missiles on top of Israel cities, plus the rockets owned by hezbollah. do not think the UN forces in South Lebanon can stand against the determined hezbollah attack, they would've been overwhelmed quickly. then there's a straits of hormuz which the Iranian can easily close.
Yemeni pro-government troops retake Shi'ite rebel-held base in south (AP)
from the article: IAEA chief: World must avoid confrontational rhetoric on Iran