"Between Oct. 17-27, US and Coalition Forces have been attacked at least 14 separate times in Iraq and six separate times in Syria by a mix of one-way attack drones and rockets, for a total of 20 attacks to date," Ryder said on Friday.
Ryder said that most of the attacks were disrupted by defensive actions and failed to reach their targets.
According to the Pentagon, the airstrikes were carried out in response to an uptick in attacks by Iran's "proxy forces" against US forces in Iraq and Syria.
Ryder has stated that additional assessments of the strikes have determined that there were no casualties as a result of the earlier airstrikes.
The Pentagon press secretary further reiterated that the recent US strikes in Syria are by no means indicative of a shift in the American approach to the Palestine-Israel conflict.
"These narrowly tailored strikes in self-defense were intended solely to protect and defend US personnel in Iraq and Syria," Ryder said during a Friday briefing.
"They are separate and distinct from the ongoing conflict between Israel and Hamas, and do not constitute a shift in the US approach to the Israel-Hamas conflict.
Escalated hostilities in the Palestine-Israel conflict took a turn following Hamas' surprise October 7 attack against Israel, a move that has since prompted thousands of deaths on both sides of the conflict.