The USSR′s S-10 Granat subsonic cruise missiles designed by the NPO Novator may still be in service in Russia, albeit not deployed. In October 2015, Russia launched long-range Kalibr (Klub) cruise missiles from its small ships in the Caspian Sea on targets in Syria; in December, several 3M14K cruise missiles from Kalibr-PL system were fired from the improved Kilo-class submarine B-237 "Rostov-on-Don" in the Mediterranean. The deployment of Kalibr missiles, long-range, low-flying, capable of carrying conventional or nuclear warheads, available in land-attack, anti-ship and anti-submarine variants, was said to have altered the military balance in Europe and potentially compromised the NATO missile defence system under construction in Europe.