Andriy Kovalenko, an official on Ukraine's national security and defense council, said the strike on Sumy came after Witkoff had visited Putin, noting a Russian ballistic missile attack on Zelensky's home city, Kryvyi Rih, came after top Kremlin official Kirill Dmitriev visited Washington.

A Russian airstrike killed more than 30 people, including children, in Sumy, Ukraine as people gathered for Palm Sunday services marking the deadliest attack so far this year. Ukrainian President Volodymyr Zelensky said the strike was evidence of Russia,

Russia hit the Ukrainian city of Sumy with two missiles as civilian celebrated Palm Sunday, killing more than 30 people and injuring dozens of others, officials said.