Four Russian diplomats will be banned from Greece after evidence revealed Russia was trying to foment opposition to a historic deal between Greece and Macedonia that is likely to pave the way for Macedonia’s Nato membership and so weaken Russian influence in the western Balkans. Greece said it would expel two Russian diplomats and ban two others. Zoran Zaev, the Macedonian prime minister, speaking at the Nato summit in Brussels, indicated he knew Russia was behind some of the protests...