Joint Chiefs of Staff Chairman Mark Milley urged Kyiv and Moscow to find a political solution ahead of winter, warning that the chances of a complete military victory are unlikely, Fox News reported.

"You want to negotiate from a position of strength. Russia right now is on its back," Milley told reporters following the 7th session of the Ukraine Contact Group. "The probability of Russia achieving its strategic objectives of conquering Ukraine…is close to zero.

"Now Ukraine has had great success," he continued referring to recent gains in Kharkiv and Kherson. "But Kherson and Kharkiv are relatively small.

"So in terms of probability, the probability of a Ukrainian military victory, defined as kicking the Russians out of all of Ukraine, to include what they claim is Crimea…is not high, militarily," he added.