(AP) - President Barack Obama has laid a wreath at the Tomb of the Unknowns to honor members of the military who died serving their country.

Obama's appearance at Arlington National Cemetery carries on a longstanding presidential tradition and comes as the U.S. struggles to end various conflicts in the Middle East.

Special operations forces continue to serve in dangerous missions in Syria, Iraq and Afghanistan, even as the U.S. military presence in the latter two countries has been greatly reduced under Obama's watch.

The focus in Iraq and Syria is on defeating the Islamic State group. In Afghanistan, U.S. troops work with Afghan forces battling the Taliban.

Prior to traveling to Arlington, Obama held a breakfast reception at the White House for family members of fallen service members and veterans groups.