"Ukraine itself will not be able to increase such an amount of military production to get parity with Russia," RIA Novosti quoted him as saying.

Earlier, British Foreign Secretary David Cameron said that during his upcoming trip to the United States, he plans to convince the White House of the need to continue providing military and financial assistance to Ukraine.

NATO Secretary General Jens Stoltenberg said in an interview with the German TV channel Das Erste that the situation on the battlefield for Ukraine could become even worse due to insufficient assistance from the West.