KEY POINTS
  • Ukrainian lawmaker Lesia Vasylenko told CNBC that comments regarding U.S. financial support for Ukraine were "concerning" and "upsetting."
  • Political newcomer Vivek Ramaswamy said he would not back additional aid to Ukraine and U.S. policy had been "disastrous."
  • Vasylenko said Ukraine could only succeed in its counteroffensive in Russia-occupied territories with "enough weapons, fighter jets, long-range missiles to fight with."

Ukrainian lawmaker Lesia Vasylenko on Thursday said some U.S. Republican presidential candidate comments over support for her country are concerning.

"With some of the United States politicians claiming that they will reduce the support to Ukraine, well, that's actually quite concerning, and upsetting in a way because the United States [is] the country that has been the strongest supporter of democracy and has been the baseline for democracy," Vasylenko told CNBC's "Squawk Box Europe," in response to statements made during the inaugural debate of Republican presidential candidates on Wednesday.