Read MoreThere are heightened threats of a wider war in the Middle East after a series of assassinations attributed to Israel. Sources tell CBS News that the U.S. has sent more fighter jets to the region, ahead of what could be a major retaliation by Iran and Hezbollah, its ally based in Lebanon.There are heightened threats of a wider war in the Middle East after a series of assassinations attributed to Israel. Sources tell CBS News that the U.S. has sent more fighter jets to the region, ahead of what could be a major retaliation by Iran and Hezbollah, its ally based in Lebanon.