"(Freezing of the conflict) will not lead to the end of the war," Mykhailo Podolyak, an adviser to the Presidential Office, told Current Time on Sept. 17.

So, there seems to be little military gain to allowing Ukraine to fire long-range missiles on military targets inside Russia. The risk of escalation, however, is significant. Russia has, of course, warned that it would see the use of Western long-range missiles on targets on its territory as Nato directly going to war with Russia.

"We think it lays out a strategy and a plan that can work," she said. Miller told a news briefing Blinken had learned about the plan during a visit to Kyiv and shared the ambassador's assessment. He said Ukrainian President Volodymyr Zelenskiy had said he looked forward to presenting the plan in detail to President Joe Biden.

The plan presented by Trump’s running mate is closer to Russia’s position rather than that of Ukraine and NATO.