The US military carried out a retaliatory strike in Baghdad on Thursday that killed a militia leader it blames for recent attacks on US personnel.
In the current strategic environment, Tehran prefers to remain within the circle of proxy war, while Israel may not wish to gamble on opening a new conflict.
At least 60 troops have suffered minor injuries, often traumatic brain injuries, since Oct. 17. All US personnel who were wounded have returned to duty, officials say.
As tensions soar over the Israel-Hamas conflict, US and coalition troops have been attacked at least 12 times in Iraq and four times in Syria by Iran-backed forces.
Iraq has asserted that if the US is seen as supporting Israel then US forces could be targeted in Iraq.
The Pentagon is also rushing weaponry, including air defenses and munitions, to Israel.
This is the latest helicopter raid by US forces in Syria and appears to be part of an increase of these types of operations.
There have been several attempts by US soldiers stationed in South Korea to desert or defect to North Korea, but King's expulsion came relatively quickly compared to others.
The Pentagon said that they cannot verify alleged comments by US Private King.
The House version of the annual defense bill requires the Pentagon to run a CL-20 pilot program that switches out either the explosive or propellant in three existing weapons.