Diplomats hope the relative calm on the line of contact that has been observed over the last days can be sustained throughout the usually difficult summer months
In a letter to the Russian President, Turkish leader Erdogan is reported to have said "sorry" for the downing of a Russian plane in 2015. The Russians say he "apologised".
German Foreign Minister Frank-Walter Steinmeier will hold discussions with the leaders of Armenia, Azerbaijan and Georgia on the unresolved conflicts in the region.
Ecumenism and peace were the key messages of the visit, during which the Pope once again used the word genocide to characterise atrocities committed against Armenians in Anatolia in 1915.