U.S. Secretary of State John Kerry during a meeting with Ukrainian Foreign Affairs Minister Pavlo Klimkin in Brussels (Belgium) has expressed concern about the increasing violence in Donbas and reaffirmed U.S. support for Ukraine.

Secretary Kerry attended the second day of the NATO foreign ministerial session, which focused on Ukraine on Thursday in Brussels, the U.S. Embassy in Kyiv reported.

"The Secretary also met with Ukraine’s Foreign Minister Pavlo Klimkin, underscoring the United States’ continuing support for Ukraine, and expressed concern about recent increase in violence in eastern Ukraine due to ongoing Russian separatist attacks," the report reads.

The Secretary and the Foreign Minister Klimkin agreed on the need to accelerate implementation of the Minsk agreements as the best way to bring peace to eastern Ukraine, te Embassy said.

Kerry also urged continued progress on reforms.