New Delhi: In a major development, Russia launched an intercontinental ballistic missile during an attack on Ukraine on Thursday. Intercontinental ballistic missiles are strategic weapons designed to deliver nuclear warheads and are an important part of Russia's nuclear deterrent. RS-26 Rubezh missile According to Defence Express, the RS-26 "Rubezh" missile is designed for delivering nuclear warheads. Range of RS-26 Rubezh …