KIEV, Dec. 11 – President Petro Poroshenko and leaders from the European Union will hold a mini summit in Brussels on December 16 to address a broad agenda which includes various aspects of cooperation, a Ukrainian diplomatic source told Interfax-Ukraine on Friday.

"The president will hold a mini summit in Brussels on December 16, which all European Union leaders will take part in, including European Council President Donald Tusk, European Commission President Jean-Claude Juncker, European Parliament President Martin Schulz, EU High Representative for Foreign Affairs and Security Policy and European Commission Vice President Federica Mogherini, and a number of European commissioners," the source said.