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

New intelligence obtained by the United States suggests that Israel is making preparations to strike Iranian nuclear facilities, CNN reported on Tuesday, citing multiple U.S. officials familiar with the intelligence.

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.