MOSCOW – Russia has conducted a successful test of a new atomic-powered and nuclear-capable underwater drone, President Vladimir Putin said Wednesday, declaring that the new weapon can't be intercepted.

Putin's statement, which comes three days after he praised a successful test of a new nuclear-powered cruise missile , appears to be another message to U.S. President Donald Trump that Russia is standing firm in its maximalist demands on Ukraine.

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Speaking at a meeting with soldiers wounded in Ukraine, Putin said the Poseidon drone was tested while running on nuclear power for the first time Tuesday, describing it as a “huge success.” Poseidon is unmatched in speed and depth, he said, and “there is no way to intercept it.”

He said the nuclear reactor that powers Pos

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