On 29^th May 2013, the City of Novi Sad and the Environmental Association of the City of Athens and Piraeus signed a Memorandum of Understanding and Inter-Balkan Cooperation in the Field of Environmental Protection. The first result of this cooperation is the implementation of the Inter-Balkan Network of Local Authorities for Environment (ELAIN) project under the EU's Europe for Citizens Program. The project aims to identify environmental challenges and find the best solution to local environmental problems. In addition to City of Novi Sad, seven other partner cities are participating in the realization of this project: Athens, Niš, Sofia, East Sarajevo, Bijeljina, Rijeka and Tirana. The grant is worth EUR 55,000. The project has been fully implemented.