New report reveals Israel may be preparing a strike on Iran's nuclear facilities following U.S. intelligence showing increased military activity.

Iran’s nuclear facilities are deep underground and heavily fortified. An effective attack by Israel would require U.S. assistance for both mid-air refueling and munitions, according to the February intelligence report.

As US-Iran nuclear talks falter over enrichment, Israel is reportedly readying for a potential swift and sustained military campaign against Iranian nuclear facilities. Israeli intelligence now believes a deal is unlikely,