Putin, who says Ukraine and Russia are essentially one people, casts the war as an inevitable confrontation with the United States, which he accuses of threatening Russia by meddling in its backyard.
Sixty one years to the day since the Soviet Union's Yuri Gagarin blasted off into the history books by becoming the first man in space, Putin drew an analogy between Soviet space successes and Russia's defiance today.
"The sanctions were total, the isolation was complete but the Soviet Union was still first in space," said Putin, 69, recalling his own wonderment as a schoolboy learning of the achievement. "We don't intend to be isolated," Putin added. "It is impossible to severely isolate anyone in the modern world - especially such a vast country as Russia."