France is moving to tie its nuclear deterrent strategy more closely with European allies while keeping full control over any strike decision.

The submarine will undergo further trials before delivery to the French Navy later this year.

The announcement was a significant step in forging a European deterrent as Russia grows more aggressive and the U.S. steps back.

The Swedish military says that a Russian drone carried out an unauthorized flight off southern Sweden earlier this week while a French aircraft carrier was docked in the port of Malmö.

French President Emmanuel Macron, the person with the power to unleash France’s nuclear arsenal, will on Monday update French thinking on the potential use of warheads carried on submarines and planes ...