"At the upcoming meeting of NATO foreign ministers, we will make it clear to the American side that we should not engage with Putin's stalling tactics," she said in a statement released after her arrival in the Ukrainian capital. NATO foreign ministers are due to meet in Brussels on Thursday and Friday. The Kremlin said on Monday that Russia and the United States were working on ideas for a possible peace settlement in Ukraine and on building bilateral ties despite U.S. President Donald Trump saying that he was "pissed off" with Vladimir Putin.