Today newly appointed Ukrainian Ambassador to Armenia Alexander Bozhko handed his credentials to RA President Robert Kocharian, President's press center reported. Robert Kocharian congratulated the diplomat on the appointment and welcomed him back to Armenia. A. Bozhko said Armenia underwent a lot of positive changes during 4 years of his absence from the republic. Touching upon the Armenian-Ukrainian relations the RA President noted that the efforts for strengthening economic relations proved fruitful. At the same time he added that much is still to be done for the development of political and humanitarian relations. Robert Kocharian voiced assurance that thanks to the efficient activities of the Ambassador greater progress will be fixed. To note, Alexander Bozhko occupied the post of the Ukrainian Ambassador to Armenia in 1996-2001.