"As a result we are now fully committed to protecting the Iraqi bases that host Coalition troops. This has limited our capacity to conduct training and to support their operations against Daesh and we have therefore paused these activities, subject to continuous review," it added, using the Arabic nomenclature for the terrorist group.

Protecting U.S. forces "is our #1 priority. Period," tweeted Lt. Gen. Pat White, head of Combined Joint Task Force-Operation Inherent Resolve, the command fighting ISIS.

Force protection is our #1 priority. Period. I’ve ordered @CJTFOIR to focus on security for all personnel. Full @CJTFOIR statement here: pic.twitter.com/qeDql3xTg7 — Lt. Gen. Pat White (@iiicorps_cg) January 5, 2020

The announcement came just hours after the Iraqi Parliament passed a nonbinding resolution requesting the Iraqi government kick U.S. troops out of the country following the U.S. drone strike on Friday that killed Iranian General Qassem Soleimani, the head of Iran's Quds Force.

The State Department later issued a statement regretting the vote.

“The United States is disappointed by the action taken today in the Iraqi Council of Representatives,” spokeswoman Morgan Ortagus said. “While we await further clarification on the legal nature and impact of today‘s resolution, we strongly urge Iraqi leaders to reconsider the importance of the ongoing economic and security relationship between the two countries and the continued presence of the Global Coalition to Defeat ISIS. We believe it is in the shared interests of the United States and Iraq to continue fighting ISIS together. This administration remains committed to a sovereign, stable, and prosperous Iraq.“

The task force said in its statement on Sunday that it hoped it could refocus on defeating the vestiges of the ISIS terrorist group.

"We remain resolute as partners of the Government of Iraq and the Iraqi people that have welcomed us into their country to help defeat ISIS," its statement added. "We remain ready to return our full attention and efforts back to our shared goal of ensuring the lasting defeat of Daesh."