Turkish President Recep Tayyip Erdogan on Wednesday urged Greece to “change course” and end what he described as the militarization of Aegean islands that have a demilitarized status, while warning against interpreting Ankara’s “calm and rational approach” as a sign of weakness.

Turkey has delivered a diplomatic note to Greek authorities outlining its views and objections regarding Greece’s recent spatial-planning initiatives in the Aegean, according to…

President Recep Tayyip Erdoğan urged Greece to stop arming the Aegean islands as tensions boil between the two countries, noting that Türkiye is a good...