The formation of a joint Lithuanian-Polish-Ukrainian LitPolUkrBrig brigade is part of NATO agreements to modernize the Ukrainian army, Polish President Bronislaw Komorowski has said.

"This agreement is part of the plan, which was discussed at the NATO summit in Newport, where it was decided to support Ukraine" Komorowski said before the ceremony for the signing of the agreement to form the joint LitPolUkrBrig brigade in Warsaw on Friday.

According to him, the brigade will be part of the peacekeeping contingents, the platform for exchange of experience, knowledge and skills, not only between the three participating countries, and will also contribute to the interaction of the Ukrainian army with the armed forces of the world.

He added that Poland pledged to contribute to the process of the Ukrainian army modernization.

"I believe that the combination of all these steps will help the Ukrainian army to cooperate efficiently with the armies of the world, as well as modernize the armed forces of Ukraine, which is required in connection with the existing threat posed by an aggressive neighbor," Komorowski said.