The RS-24 missile was fired from a mobile launcher from the Plesetsk cosmodrome about 800km north of Moscow.
According to RTE
"Russia has resumed Cold War-style long-haul air missions to areas patrolled by NATO and the United States.
This afternoon a Russian bomber flew over a US naval base on the Pacific island of Guam and 'exchanged smiles' with US pilots who had been scrambled to track it.
Major-General Pavel Androsov, head of long-range aviation in the Russian air force, confirmed that Russia had decided to revive the tradition 'of long-range aviation to fly far into the ocean, to meet US aircraft carriers and greet US pilots visually................."
Russia is now is now reasserting its position as a world super power in the wake of the disintegration of the old USSR. High oil prices have greatly benefited its economy.