Ukrainian and Russian officials wrapped up a ¡°productive¡± first day of new U.S.-brokered talks in Abu Dhabi, Kyiv¡¯s lead negotiator said on Wednesday, as fighting in Europe¡¯s biggest conflict since World War II raged on.

The two-day trilateral meetings come after Ukraine President Volodymyr Zelenskyy said Russia had exploited a U.S.-backed energy truce last week to stockpile munitions, attacking Ukraine with a record number of ballistic missiles on Tuesday.

¡°The work was substantive and productive, focused on concrete steps and practical solutions,¡± Rustem Umerov, the head of Ukraine¡¯s ?National Security and Defense Council, wrote on X.