New Delhi, Oct. 11 -- Ukrainian President Volodymyr Zelensky and US counterpart Donald Trump spoke on Saturday, Zelensky's chief of staff Andriy Yermak said in a Telegram post without elaborating.

"President Zelensky is now speaking with President Trump," Yermak wrote.

This call comes in the wake of Russia ramping up strikes in Ukraine. On Friday, Moscow launched attacks on Ukraine's power grid that caused blackouts across the country. On Saturday, power was restored to over 800,000 residents of Kyiv.

Prime Minister Yulia Svyrydenko described the attack as "one of the largest concentrated strikes" against Ukraine's energy infrastructure, an AP report revealed.

Russia's Defense Ministry on Friday revealed that Kinzhal hypersonic missil...