"We are thankful to our allies for their military help. But: it is not enough. Ukraine needs 10 times more to finish Russian aggression this year. Thus we call upon our partners to cross all artificial red lines," Melnyk said on Twitter.
He also urged the allies to allocate 1% of their GDP for arms supplies to Ukraine.
Western countries have been supplying Kiev with various types of weapon systems, including air defense missiles, multiple launch rocket systems, tanks, self-propelled artillery, and anti-aircraft guns since Russia launched its military operation in Ukraine over a year ago. The Kremlin has repeatedly warned against further arms deliveries to Kiev.