Fatal blast renews debate on US presence in Syria

The killing of two US soldiers and two US civilians in a suicide bombing claimed by the Islamic State state in Syria has reopened a debate on the presence of the United States in the war-ravaged country.

Two US service members, along with a contractor and a civilian working for the US Department of Defense, died in the blast in the north Syrian city of Manbij, and three other US citizens were injured, according to media reports.

More than a dozen civilians and Kurdish militia members also were killed.