Three of the officials, speaking to Reuters on the condition of anonymity, said the recommendations were being discussed during the preparations of a withdrawal plan to be presented to the White House in the coming days.

The Pentagon and the White House did not comment on what will happen with the weapons, Reuters said.

The U.S. President Donald Trump announced last week his decision to pullout U.S. forces in Syria. His decision has upset U.S. commanders, who view the move as a betrayal of the Kurdish People’s Protection Units (YPG), which forms the backbone of U.S. led coalition forces battling IS, Reuters said.

The weapons provided to the YPG has been a source of tension between Ankara and Washington, as Turkey sees the YPG as an extension of the Kurdistan Workers Party (PKK), which has been fighting inside Turkey for more than three decades.

Turkish government last month said that it would launch a large scale military operation against the YPG-controlled territories on the east of Euphrates River in Syria. Ankara delayed its plans after Trump announced the U.S. withdrawal.

According to one of the officials talking to Reuters, the United States told the YPG that they would be armed by Washington until the fight against IS was completed.

The proposal to leave U.S.-supplied weapons with the YPG, which could include anti-tank missiles, armoured vehicles and mortars, could complicate Trump’s plan to allow Turkey to finish off the fight against IS, Reuters said.

Though the Pentagon keeps records of the weapons it has supplied to the YPG, it would be almost impossible to locate all of the equipment, the U.S. officials said.

“How are we going to get them back and who is going to take them back?” Reuters quoted one of the officials as saying.

The United States started distributing arms and equipment to the YPG in May 2017 for an offensive against Raqqa, but assured Ankara that it would take back the weapons after the defeat of ISIS.

Trump’s national security adviser John Bolton announced on Friday that he would visit Turkey and Israel next week for talks on Syria.

Reporter’s code: 50101