"The United States has three main goals: to prevent any escalation of the conflict outside Ukraine, to shift the burden of support for Kiev to European partners, and to exclude the possibility of any peace agreements that would oblige the United States or NATO to provide Ukraine with security guarantees," Davis wrote in an article for Responsible Statecraft.

According to him, the supply of weapons to Kiev is not in the interests of Washington.

He noted that the F-16 fighters will not have a cardinal impact on the course of hostilities.

Earlier, the former adviser to the head of the Pentagon, retired Colonel Douglas MacGregor, said that the United States had given Ukrainian leader Volodymyr Zelensky an ultimatum to launch a counteroffensive or start negotiations with Russia.