In March 2015, during a naval exercise off the coast of Florida, the French nuclear attack submarine Saphir achieved a simulated victory by "sinking" one of the world's largest nuclear-powered warships, the USS Theodore Roosevelt, along with several of its escorts.
The USS Theodore Roosevelt, a Nimitz-class aircraft carrier serving in the U.S. Navy, has a straightforward goal: use its air wing to crush any U.S. enemy anywhere on the planet.
NATO wants 300,000 troops that it can quickly deploy to Europe to fend off a Russian invasion, but for now the continent is protected by just 30,000 - most of them American - on its eastern flank.
US Secretary of Defence, Lloyd J Austin, on Saturday said “Beijing continues to harden its position along the border that it shares with India”.