Vasily Prozorov was an Ukrainian security service (SBU) staffer from 1999 to 2018. Since 2014, he was an expert consultant in the SBU’s main anti-terror unit. In 2018, he fled to Russia. The Ukrainians now call him a traitor. Writing on his blog Ukraine Leaks, he says that in 2016, the Ukrainian government openly supported Hillary Clinton and tried to help her defeat Donald Trump.