The answer is natural resources here! Russia is a part of OPEC plus countries and has one of the biggest oil and gas reserves. So now America's dream is coming true when they see EUR is dropping faster than expected. Because that's was always the gameplan of US. Russia has told ass their buyer to pay in  Rubles and as a result their buyers have started selling their euros against Rubles to pay Russia for their oil and gas bills. As a result, EUR is standing at all time low and Russia is getting the benefits of strongest Rubble ever. US is happy because EUR is weakening and UK is happy to prove that Brexit was a correct decision.