"We have agreed (on the session) in principle, now we must fix the exact date. This will be a great event and I believe that it will happen by the end of this year," said Kosor, the leader of the ruling Croatian Democratic Union (HDZ).
Kosor said that in Meise she had held a series of bilateral talks with other participants in the EPP gathering who expressed their support to Croatia's efforts to finish its European Union accession negotiations.
The leaders of the EPP group, which includes 73 centre-right parties from 39 countries, traditionally meet ahead of each EU summit.