What is President Obama doing in Greece? The question on what he will do in Germany is also pertinent.
The only thing that might make sense is that President Obama wishes to reassure the Greeks and the Germans and the Europeans that American Foreign Policy will continue as it were, on all fronts, including NATO.
In the case of Greece, President Obama included in his agenda the expression of his support of the IMF position on the restructuring of the Greek loans. The IMF says that the Greek loans must be restructured, provided that the reforms program goes ahead as planned.
But this does not make sense coming from a President whose term is over. This is something for the President elect to say.
Coming from President Obama today, any assurance regarding the continuity of American Foreign Policy lacks credibility. Something similar can be said about his views on the restructuring of the Greek loans. A reiteration of the IMF position does not bring anything new on the table.
So, why did President Obama visit Greece?
I can only offer one explanation.
The most likely explanation is that when the visit was planned the President and his team were certain of a Clinton win. Therefore, it would make eminent sense for President Obama to visit Greece and Germany to offer reassurances of policy continuity.
Clinton lost to Trump, but the visit was already planned and it would look rather bad to cancel it. So the visit went ahead even though it makes no sense.