France and Poland on Friday signed a treaty committing both sides to mutual assistance in case of an attack by an aggressor, strengthening ties between the EU heavyweights in the wake of Russia's

French President Macron says agreement to help accelerate joint investments in European defense industrial base, including in production of weapons, ammunition - Anadolu Ajansı

French officials said the treaty will include language meant to facilitate talks with Poland on France's "vital interests" - code for nuclear deterrence. They said France's nuclear umbrella won't replace the U.S. security guarantee, but would complement Poland's defence if faced with threats.