American officials familiar with the operation said the mission also includes drawing up plans to try to insulate Jordan, an important American ally in the region, from the upheaval in Syria and to avoid the kind of clashes now occurring along the border of Syria and Turkey.
…The Obama administration has declined to intervene in the Syrian conflict beyond providing communications equipment and other nonlethal assistance to the rebels opposing the government of President Bashar al-Assad. But the outpost near Amman could play a broader role should American policy change. It is less than 35 miles from the Syrian border and is the closest American military presence to the conflict.