An aggressive Iran has resulted in broader common ground between Israel and many of the Sunni Arab governments in the region.
On New Years Eve, an initial wave of 750 paratroopers was deployed to the Middle East.
The plan ended speculation as to whether his administration would abandon a "two-state resolution" to the conflict.
The top U.S. commander in the Middle East said the most recent forces to enter the region could be there for "quite a while.”...
The service members that the Pentagon recently ordered to the Middle East for emergency deployment may get some special pays.
The U.S. has overwhelming force in the region, but war with Iran could come at a heavy cost.
Air Force Gen. John Hyten, vice chairman of the Joint Chiefs of Staff, was called back to Washington, D.C., from Europe.
In three "notice to airmen" messages, the agency prohibits flights over Iraq, Iran, the Persian Gulf and Gulf of Oman.
Thousands of troops have departed for the Middle East in recent days.
It's the latest short-notice deployment in the wake of a U.S. strike that killed Iranian Maj. Gen. Qasem Soleimani.