Greece and Turkey’s competing bids to win U.S. attention, money and weapons are roiling the region, with war already raging next door.

The longtime Mediterranean rivals have suddenly found themselves in a prominent position as the U.S. and its Western allies reorient their military forces to constrain Russia’s march into Ukraine, which sits just across the Black Sea from Turkey and northeast of Greece. And both countries are playing different cards to argue that it — and not the other — is the most important nearby ally for the U.S. and NATO.