While Paris and Berlin sip espressos and debate the philosophical merits of “strategic autonomy”, other countries stare across the border at Russian revanchism.

When he steps off the plane in Ankara for this week's NATO summit, it will be the president's first trip to Turkey since he regained the White House.

While Paris and Berlin sip espressos and debate the philosophical merits of “strategic autonomy”, other countries stare across the border at Russian revanchism.