Defense secretary orders submarine to Middle East, accelerates arrival of strike group ahead of anticipated Iran attack CNNMiddle East crisis live: US accelerates military deployment to region amid reports Iran may attack within days The GuardianU.S. sends submarine, aircraft carrier to Middle East amid Iran-Israel attack fears NBC NewsU.S. sends more forces and military hardware to the Middle East in anticipation of Iranian attack on Israel CNBCU.S. Sends Carrier, Missile Submarine to Middle East as Iran Tensions Grow The Wall Street Journal