The event will be hosted by Greek Prime Minister Kyriakos Mitsotakis, with whom Plenković will meet, the Croatian government announced on Friday.
Although the government has not announced it, one can expect the two officials will also discuss the case of Croatian hooligans imprisoned in Greece after recent riots ahead of a AEK-Dinamo football match in which one AEK supporter was killed.
Plenković will also hold talks with the prime ministers of Kosovo, Bosnia and Herzegovina, and Moldova.