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President Biden approved Ukraine's military to use U.S.-provided long-range missiles on targets inside Russian territory, the New York Times reported Sunday, citing unnamed U.S. officials.
Russian President Vladimir Putin has previously said that such an escalation would constitute an act of war. He has yet to react to Biden's announcement Sunday.
The White House did not immediately respond to a request for comment from Fox News Digital.
This is a developing story. Check back soon for updates.
