NATO has taken over coordination of Western military aid to Ukraine from the U.S. as planned, a source said on Tuesday, in a move widely seen as aiming to safeguard the support mechanism against NATO sceptic U.

NATO has assumed responsibility for coordinating Western military aid to Ukraine through the NATO Security Assistance and Training for Ukraine center, Reuters reported on Dec. 17, citing its sources.

North Atlantic Treaty Organization (NATO) has now assumed responsibility for coordinating military aid to Ukraine from Western countries. Previously, this role was performed by the United States, according to Reuters.

The step, coming after a delay of several months, gives NATO a more direct role in the war against Russia's invasion while stopping well short of committing its own forces.