Shafaq News/ American and allied forces in Iraq and Syria have been attacked with drones and rockets 23 times this month, a senior US defense official said Monday, as regional tensions soar over the Israel-Hamas war.

Washington has blamed the spike in attacks on Iran-backed forces, and American warplanes carried out strikes last week against sites in Syria that the Pentagon said were linked to Tehran.

"From October 17 to October 30, US and coalition forces have been attacked at least 14 separate times in Iraq and nine separate times in Syria," the official said, referring to members of the international coalition against the Islamic State (IS) jihadist group.

The attacks were carried out "through a mix of one-way attack drones and rockets," and "most failed to reach their targets thanks to our robust defenses," the official told journalists.

The number of attacks in Syria has risen by three since Friday, coinciding with reports of US troops being targeted in that country over the weekend and claims of responsibility from a group calling itself the "Islamic Resistance in Iraq," which has said it carried out many of the recent strikes.

The Pentagon has previously put the toll from the attacks at 21 American personnel who suffered minor injuries and a contractor who died of a cardiac event during a false alarm.

The US official said there was nothing new to report on casualties from the attacks.

The surge in attacks on US troops is linked to the war between Israel and Hamas, which began when the militant group carried out a shock cross-border attack from Gaza on October 7 that Israeli officials say killed more than 1,400 people.

Israel's retaliatory bombardment has killed more than 8,300 people, according to the Gaza health ministry -- deaths that have sparked widespread anger across the world.

There are roughly 2,500 American troops in Iraq and some 900 in Syria as part of efforts to prevent a resurgence of IS, which once held significant territory in both countries but was pushed back by local ground forces backed by international air strikes in a bloody multi-year conflict.