For centuries, even when Athens was a bastion of the West during the Cold War, Greece and Russia have seen themselves as natural allies. Both are Christian Orthodox nations on Islam’s western frontiers; even as a NATO member, Greece tried to maintain channels of communication with the Soviet Union. Yet a sudden dispute over alleged Russian meddling in Greek affairs has escalated rapidly. This could have long-term consequences for Greek-Russian ties and for the Western Balkans.

This month, Athens informed Moscow that it was expelling two Russian diplomats and refusing entry to two others. Among the accusations: the four were trying to stoke opposition to a recent agreement signed by Greece and a northern neighbor, the Former Yugoslav Republic of Macedonia, ending a 27-year dispute over the latter’s name.

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