Ukraine has accused Russia of violating its self-declared ceasefire by launching airstrikes on the northern Sumy region shortly after the truce began, Al Jazeera reported.

Ukraine's air force claims that Russian planes launched three guided bombings after midnight, just hours into the three-day ceasefire that Moscow announced on May 8–10. In accordance to the Kremlin, the truce was a humanitarian gesture intended to test Ukraine's peace preparedness and commemorate the 80th anniversary of the Soviet victory in World War II.

Volodymyr Zelenskyy, the president of Ukraine, called the action an absurdity and claimed that Russia had increased its attacks in response to peace proposals. He reiterated Ukraine's backing for the United States' March ceasefire proposal, which Russia has not yet accepted and which calls for a 30-day truce, according to Al Jazeera.

Moscow insists that such a ceasefire would require enforcement mechanisms before implementation.