Israel is poised to launch operation on Iran, multiple sources tell CBS News

U.S. officials have been told Israel is fully ready to launch an operation into Iran, multiple sources told CBS News. 

The U.S. anticipates Iran could retaliate on certain American sites in neighboring Iraq. This is part of the reason the U.S. advised some Americans to leave the region earlier Wednesday. The State Department ordered non-emergency government officials to exit Iraq due to "heightened regional tensions," and the Pentagon has authorized military family members to voluntarily leave locations throughout the Middle East, a defense official told CBS News.