France, April 21 -- Meeting in the northern Polish port city of Gdansk on Monday, Macron and Tusk set out plans to expand collaboration in areas69 ranging from nuclear deterrence to military satellites, signalling a growing alignment at a time of heightened security concerns across Europe.

The French president said work over the coming months would pave the way for "concrete progress" on nuclear deterrence - a sensitive but increasingly prominent topic in European defence debates.

Areas under consideration include intelligence sharing, joint military exercises and the possible deployment of French aircraft capable of carrying nuclear weapons on Polish territory.

Warsaw could also support France's deterrence effforts through capabilitie...