Poland's Prime Minister Mateusz Morawiecki and his Lithuanian counterpart Ingrida Šimonytė met in person at the Royal Castle in Warsaw, while Ukraine's Denys Shmyhal joined them via video link, Polish state news agency PAP reported.
The talks focused on the latest developments in the Russia-Ukraine war, which entered its 19th day on Monday, officials told reporters.
The three prime ministers also discussed ways of helping war refugees as well as support for Ukrainian fighters and further sanctions against Russia, public broadcaster Polish Radio’s IAR news agency reported.
At the end of the summit, the three prime ministers were expected to sign a joint declaration condemning Russia's brutal military invasion of a sovereign and democratic neighbour, according to officials.
Morawiecki, Šimonytė and Shmyhal also paid tribute to the victims of the war in Ukraine, reporters were told.
Poland, Lithuania and Ukraine work together as part of a three-way initiative known as the Lublin Triangle. It aims to enhance the three countries' political, economic and social ties while also helping Ukraine regain its territorial integrity and bring that country closer to the European Union and NATO.
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Source: IAR, PAP