Col Gen Sergey Karakaev, of Vladimir Putin's Strategic Missile Forces said a test of the Sarmat missile was successful but did not give details, The Telegraph's Russia correspondent Nataliya Vasilyeva reports.Russia last test-fired the Sarmat in April, with Mr Putin watching the launch in northern Russia via a video-link and saying the new intercontinental ballistic missile will make Russia’s enemies “think twice”.The Sarmat missiles can deploy with at least 10 warheads at a time, which Russia claims allows it to overwhelm air defences.Separately, Col Gen Karakaev said on Friday that Russian missile forces are ready to receive a second batch of the Avangard hypersonic glide missiles.Currently there is just one military unit equipped with the Avangard missiles that are able to carry nuclear warheads at 20 times the speed of sound."