U.S. Army Col. Nathan McCormack, previously assigned to advise the Chairman of the Joint Chiefs of Staff on Israel-related issues, has been removed from his position following the revelation of his anti-Israel social media posts.

According to his LinkedIn profile, McCormack served as the Levant and Egypt branch chief at the Joint Chiefs of Staff’s J5 planning directorate. On his X account, he posted several inflammatory tweets, including calling Israel a “death cult” and referring to the Israeli government as “Netanyahu and his Judeo-supremacist cronies,” among other remarks, according to the Jewish News Syndicate.

A Joint Staff official told The Daily Wire that the Department of Defense removed McCormack from his role with the Joint Chiefs of Staff and has referred the matter to the U.S. Army for further investigation.

The official emphasized that McCormack’s social media posts do not represent the views of the Joint Staff or the Department of Defense.

“Our global alliances and partnerships are vital to our national security, enhancing our collective defense, deterrence, and operational reach,” the official said.

Following the Jewish News Syndicate’s report, McCormack’s semi-anonymous social media account was deleted.

The J5 directorate of the Joint Chiefs of Staff provides guidance to the chairman on military strategy, planning, and policy across a broad array of national security matters. McCormack’s role involved preparing senior leadership for engagements with partner nations, including Israel.

McCormack made the posts on an X account under the name “Nate,” where he has referenced his job multiple times and even shared a photo of his Meritorious Service Medal certificate.

Since starting his position in June 2024, according to his LinkedIn, McCormack has frequently posted his opinions about Israel, particularly following Hamas’s October 7 massacre of Israeli civilians.

“The Western states go to great lengths to avoid criticism of Israel, much out of Holocaust guilt,” McCormack tweeted in April.

In May, he posted that “Netanyahu and his Judeo-supremacist cronies are determined to prolong the conflict for their own goals: either to remain in power or to annex the land.”

He has also questioned whether the U.S. was just a proxy of Israel.

“I’ve lately been considering whether we might be Israel’s proxy and not realized it yet,” he posted. “Our worst ‘ally.’ We get literally nothing out of the ‘partnership’ other than the enmity of millions of people in the Middle East, Africa and Asia.”