Putin unveils new 'untrackable' super missile

Russia has developed missiles that no other country possesses, President Vladimir Putin has claimed in comments that could spark a new arms race with the US.

They include a "new supersonic weapon" that can reach almost any point in the world and cannot be tracked by anti-missile systems, he said.

The weapon was successfully tested in late 2017, he added.

He later suggested Moscow only envisages using the missile in response to a nuclear attack, rather than being the aggressor.

"The response would be immediate," he said.
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