FILE In this file photo taken on Monday, July 16, 2018, U.S. President Donald Trump, left, and Russian President Vladimir Putin shake hands at the beginning of a meeting at the Presidential Palace in Helsinki, Finland. U.S. special counsel Robert Mueller has yet to release his report about Russian meddling in the 2016 U.S. presidential election, but Moscow has already rehearsed its response, dismissing Mueller's investigation as part of the U.S. political infighting. (AP Photo/Pablo Martinez Monsivais, File)