Greece’s Prime Minister Alexis Tsipras, second left, smiles as a cat passes in front of him during his visit to the Byzantine-era Hagia Sophia, one of Istanbul’s main tourist attractions, in the historic Sultanahmet district of Istanbul on Wednesday. The president of Turkey and the prime minister of Greece on Tuesday agreed on the need to keep ‘channels of dialogue’ open between their countries, which have come to the brink of war three times since the early 1970s and have remained divided over an array of issues. (PTI)