Ukrainian Ambassador to the U.S. Oksana Markarova on Sunday stressed that the billions of dollars in U.S. support to Kyiv in its fight against Russia is being put to good use, as some Republican lawmakers have started to question the aid. “Every U.S. dollar that is given to us, we’re putting it to a good use,” Markarova said on CBS’s “Face The Nation” with Margaret Brennan. “We’re using it as an investment into our joint fight for democracy.”