Amid heightened war between Russia and Ukraine, President Vladimir Putin's ally Belarus has said that the Iskander tactical missile systems and the S-400 air defence systems that Russia has deployed to Belarus are fully prepared to perform their intended tasks. It is unclear how many of the Iskander systems, which are capable of carrying nuclear weapons, have been deployed to Belarus. This comes after the Russian President said in June that Moscow would supply Minsk with the Iskander and the air defence systems. Watch this video for more details.