Russia has deployed forty-eight (48) "Iskander" missiles launchers along the Ukraine Border. Each launcher truck carries two missiles.
The 9K720 Iskander is a mobile short-range ballistic missile system produced and deployed by the Russian military.
They travel at a terminal hypersonic speed of 2100–2600 m/s (Mach 6–7) and can reach an altitude of 50 km as they range up to 500 km.