Ukraine’s  war with Russia is "closer to an end" than many believe, Ukrainian President Volodymyr Zelenskyy said in an ABC News interview during his visit to the United States.

Also, he called on allies to strengthen Ukraine's army, ABC News reports.

"The plan of victory is strengthening of Ukraine," Zelenskyy said during a sit-down interview with "Good Morning America" co-anchor Robin Roberts. "That's why we're asking our friends, our allies, to strengthen us. It's very important."

"I think that we are closer to the peace than we think," he continued. "We are closer to the end of the war. We just have to be very strong, very strong."

Also, the president of Ukraine noted that Russian President Vladimir Putin is "afraid" of the operation of the Ukrainian armed forces in the Kursk Region of Russia.

"It's true. He's afraid very much," Zelenskyy said of Putin. "Why? Because his people saw that he can't defend — that he can't defend all his territory."

The Ukrainian leader added that only from a "strong position" can Ukraine "push Putin to stop the war."