Europeans must understand that Russian dictator Vladimir Putin won’t stop if he succeeds in Ukraine. In that case, Russian troops could be on the Polish border, according to the EU’s top diplomat, Josep Borrell, during his speech at the University of Oxford. “Today, Putin is an existential threat to all of us. If Putin succeeds in Ukraine, he will not stop there. The prospect of having in Kyiv a puppet government like the one in Belarus, and the Russian troops on the Polish border, and Russia controlling 44% of the world[‘s] grain market is something that Europeans should be aware of,” he said…