KYIV, March 4 – Despite the first successes of Ukraine in repelling Russian military aggression, there are no guarantees that this situation will continue, the United States and NATO urgently need to provide assistance to Kyiv and its key elements should be intelligence, the supply of aviation and a partial "closed sky," ex NATO Supreme Commander and former U.S. Special Representative in Ukraine Kurt Volker have said.

"The U.S. military aid provided so far is insufficient for the scale of the problem Ukraine is facing. There needs to be more aid delivered much faster to help Ukraine get through next week," they wrote in "Six Ways to Help Ukraine Survive Right Now," published by the Center for European Policy Analysis (CEPA) think tank.