Pentagon chief orders submarine to the Middle East, tells aircraft carrier to hasten its transit The Associated PressU.S. sends more forces and military hardware to the Middle East in anticipation of Iranian attack on Israel CNBCUS sends submarine to Middle East as fears grow of reprisal against Israel Financial TimesMiddle East crisis live: US accelerates military deployment to region amid reports Iran may attack within days The GuardianDefense secretary orders submarine to Middle East, accelerates arrival of strike group ahead of anticipated Iran attack CNN