Why are B-2 stealth bombers being deployed to Guam, and what could come next?

As the war between Iran and Israel continues, Fox News confirmed earlier reports that B-2 stealth bombers took off from Whiteman Air Force Base in Missouri and headed to Guam. 

A Reuters report, quoting one U.S. official, said no order was given to move the planes beyond Guam. Reuters said it wasn't clear if the deployment was linked to the rising tensions in the Middle East. 

The UK Defense Journal reports the stealth bombers were accompanied by eight KC-135 Stratotankers, which would allow for midair refueling.