(ANSA) - BELGRADE, MAY 28 - Enlargement Commissioner Marta Kos stated, "I am confident that the Polish presidency (which ends at the end of June, ed.) will open a negotiating chapter not only for Ukraine but also for Moldova." So far, Budapest has opposed the start of cluster 1 negotiations with Kiev, the one on values and rights that is required to launch the accession process. (ANSA).