Unveiled after months of secrecy, Russia’s Su-75 Checkmate is a single-engine stealth jet positioned to compete with the U.S.

Western sanctions have delayed the first flight of Russia’s fifth-generation Su-75 Checkmate, now scheduled to take place early next year. The Su-75 Checkmate is a single-engine, stealth-informed ...

The Su-75 fighter, Khabarovsk submarine, Sarmat missiles and other developments will undergo the last stages of testing.

From nuclear-powered subs to AI-powered drones, these upgrades are set to transform Russia’s battlefield reach ...