3,000 troops and 80 tanks not exactly a threat to Russia they are taking part in operation atlantic resolve a N.A.T.O exercise and as Poland is a member of N.A.T.O they have every right to be there. Now Putin may not like it as not long ago Poland was in the old Communist Block a buffer country the Russians idea being that any future land war would be fought in the buffer zone and not directly on Russian soil. WW3 come on Paul me thinks it will take a little more than this N.A.T.O exercise to do that.
Also the world will be a much safer place with Donald Trump in power since him and Vladimir are great mates.