Ukrainian President Petro Poroshenko in an interview with Fox News addressed Russian President Vladimir Putin and called an act of "war" the attack of the Russian military on Ukrainian sailors in the Kerch Strait. "Mr. Putin, this is the act of aggression. Mr. Putin, this is the war. And this is not a joke, and not an incident, and not a crisis," Poroshenko said
, See the interview on Poroshenko's Facebook page
It was Russia that provoked the war in Ukraine.
The Office of the Prosecutor of the International Criminal Court has stated that “the information available suggests that the situation within the territory of Crimea and Sevastopol amounts to an international armed conflict between Ukraine and the Russian Federation. This international armed conflict began at the latest on 26 February when the Russian Federation deployed members of its armed forces to gain control over parts of the Ukrainian territory without the consent of the Ukrainian Government https://www.icc-cpi.int/iccdocs/otp/161114-otp-rep-PE_ENG.pdf.
See recurring pro-Kremlin disinformation messages around the Azov Sea