The US military has been sharing intelligence with the Armed Forces of Ukraine (AFU) for months, helping to plan drone attacks on Russian facilities.
According to the Financial Times, Ukrainian attacks on oil refineries and other facilities in Russia have been successful in recent months, thanks in part to the Pentagon's help.
US intelligence given to Kiev allowed strikes on important Russian energy facilities, including oil refineries, far beyond the front line.
Author's summary: US helps Ukraine plan attacks on Russia.