I appeared on Al Jazeera’s Inside Story on Wednesday, in a panel discussion of Donald Trump’s embrace of a Polish initiative for a permanent US base — “Fort Trump” — despite objections from the US military and other NATO allies.

The analysis goes wider, to discuss the issue of US-Europe co-operation and the challenge that it faces from Trump’s ego and impulsiveness.

The other panellists are former Defense Department official David Des Roches, now at the National Defense University, and Warwick University’s Georg Löfflmann.