"The most important thing now is the determination to implement it," President Volodymyr Zelensky said in his evening address on Sept. 18.

"We think it lays out a strategy and a plan that can work," a top U.S. diplomat said during a news briefing on Tuesday.

"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.