Poland’s prime minister Mateusz Morawiecki has accused Emmanuel Macron of irresponsibility after the French president said Nato was suffering “brain death” and questioned the security alliance’s commitment to mutual defense.

In an interview Mr Morawiecki said Nato was “the most important alliance in the world when it comes to preserving freedom and peace”. He said Mr Macron’s questioning of whether its members could still be counted on to defend each other — the cornerstone of Europe’s security architecture — was “dangerous”.