New Delhi, Oct. 15 -- For Volodymyr Zelensky's Ukraine, a US sanctions waiver on Russian oil and sudden restrictions on Starlink have raised fresh concerns about Washington's support for Kyiv. As Russia intensifies attacks on Ukraine's energy infrastructure, the developments threaten to weaken drone operations, disrupt missile warnings and increase pressure on Zelensky to negotiate with Moscow.

Overnight, Russia struck three power plants supplying Kyiv, apparently seeking to disrupt heating and electricity as temperatures fall. Zelensky said Ukraine received no warning of incoming Russian ballistic missiles from its Western allies for a second consecutive night, leaving authorities without an air raid alert.

Russia has also struck two b...