Foreign Policy opines Greece may turn to Russia for help if they default on their loan payments. COTTonLINE speculated about this possibility a week ago.
Imagine NATO member Greece being beholden to Putin for a bailout. This could be the death of NATO, which relies on consensus decision-making.
Greeks could refuse to let the alliance come to the aid of a Baltic nation suffering the present fate of Ukraine. That is, a slomo invasion by little green men (Russian troops flying no flags). I can hear the Greek foreign minister tasking NATO "Where's the evidence? Are you sure it isn't internal unrest?"
