Russia’s war in Ukraine is damaging the environment — and it needs to be discussed more by experts, Ukrainian and United Nations officials said.

The Executive Director of the UN Environment Program, Inger Andersen, met with the Head of the Office of Ukraine’s President, Andriy Yermak, in Kyiv on Tuesday, according to a statement from the Ukrainian presidency.

The leaders discussed “the issue of Russian responsibility for environmental crimes in Ukraine.” Yermak told Anderson that “Russia is causing enormous damage to the ecological system of our country,” according to the statement.

For her part, Andersen emphasized her support for Ukraine in overcoming the challenges to its ecological system due to the Russian invasion, and emphasized the importance of a deeper discussion about this issue at the expert level, according to the statement.