Russia is losing the war, said US President Donald Trump's special representative for Ukraine, Keith Kellogg, APA reports.

"Trump asked me if Russia was winning the war. I told him Russia was not winning the war. If Putin had won, he would have been in Kiev. He would have been in Odessa, on the western bank of the Dnieper, and he would have changed the Ukrainian government. Russia is losing the war," Kellogg claimed.

The US President's special representative also spoke about nuclear weapons.

"This is not the Russia I knew during the Cold War, the Soviet Union. This is a different Russia. They talk big, but if I were Putin, I would be worried. Putin sometimes threatens to use nuclear weapons. The United States, Great Britain and France also have nuclear weapons. We discussed this in the Oval Office. They talked about the strength of the Russian army. I said that we will defeat the Russians. The Russian army is not as strong as Putin says. Therefore, the Ukrainian army should be praised. I think no one should be afraid of the Russian army. I don't think they have the potential to march on Berlin or anywhere else," Kellogg noted.