But Ukraine’s chief prosecutor has now halted the investigation, ostensibly to remain on Trump’s good side. The president has frequently called the Mueller investigation a “witch hunt†and has expressed his extreme displeasure with the special counsel's team, and Ukraine’s government is trying to appease Trump in order to secure much needed financial and military aid from Washington, according to a report from The New York Times published Wednesday. The order to freeze cooperation was given shortly after the Trump administration announced that it planned to provide Ukraine’s government with anti-tank missiles known as Javelins.