It all came down to costs, and Moscow apparently couldn't afford to keep operating what had been the world's largest nuclear-powered submarine. In February, Russia decommissioned its Project 941 Akula-class (NATO reporting name Typhoon) heavy nuclear-powered missile-carrying submarine cruiser Dmitry Donskoy years earlier than expected. It was just two years ago that the Kremlin announced the boat would remain in service until at least 2026, even as its role was reportedly limited to that of a weapons test platform for the new Borei-, Borei-A-, Yasen- and Yasen-M-class submarines However, this week, it was confirmed that Dmitry Donskoi was decommissioned in...