Will Nato become a transatlantic Frontex?

Donald Trump’s recent speech at the Nato headquarters during the alliance’s gathering of heads of state and government received much attention and criticism.

The primary causes of consternation were Trump’s calls for higher defence spending and his refusal to reaffirm the principle of collective defence. However, one sentence went largely unnoticed.

During his speech, Trump commented that "the Nato of the future must include a...