The US has some 900 troops in Syria and a couple of,500 in Iraq as a part of a global coalition in opposition to the Islamic State group.
Its troops in Iraq are deployed on the invitation of Baghdad, however these in Syria are deployed in areas outdoors authorities management.
The Syrian navy demanded on Saturday that Washington withdraw its troops.
“The occupation of components of Syrian territory by US forces can’t proceed,” it mentioned.
Analysts mentioned the US strikes had been unlikely to stem the flurry of assaults on US targets sparked by American help for Israel in its conflict on Hamas.
The strikes represent a “significant escalation”, mentioned Allison McManus, of the Middle for American Progress suppose tank, however “we now have not seen that related tit-for-tat strikes have had a deterrent impact”.
Al-Nujaba, an Iraqi group a part of a pro-Iran alliance blamed by Washington for quite a few assaults on its forces, vowed a response.
In an announcement, the group warned “the US occupation … that the Islamic resistance will reply within the method it deems applicable, on the time and place of its selecting, and that this isn’t the tip”.
US and coalition troops have been attacked greater than 165 occasions in Iraq, Syria and Jordan since mid-October.
The troopers killed Sunday had been the primary American navy deaths from hostile fireplace within the upsurge of violence.