Putin believes he is winning the war in Ukraine, say US intel assessments cited by the NYT.
He may also lash out at the West in unpredictable ways, one US intelligence official said.
Putin had called Wednesday's "Satan 2" missile test a warning to the West.
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Russian President Vladimir Putin believes he is winning the war in Ukraine and that Western resolve to isolate him would crack over time, US intelligence assessments say, according to The New York Times.
Putin appeared bullish in a public statement on Monday, claiming that punishing sanctions by the West had failed to significantly impact the Russian economy.
Russia has in recent days refocused its campaign in a renewed assault in the Donbas region in eastern Ukraine. »