ANKARA Turkish and U.S. top diplomats, Hakan Fidan and Antony Blinken , respectively, have exchanged a phone conversation to discuss regional developments amid renewed efforts for a ceasefire between Israel and Gaza. According to the diplomatic sources, Fidan and Blinken held a phone call late on Oct. 24 as the latter is on a tour to countries in the Middle East to end the war in Gaza. Fidan told his counterpart that a cease-fire should be declared in Gaza without delay as the humanitarian