Turkish President Tayyip Erdogan urged his Russian counterpart Vladimir Putin on Sunday to declare a ceasefire in Ukraine, open humanitarian corridors and sign a peace agreement, his office said. NATO member Turkey shares a maritime border with Russia and Ukraine in the Black Sea and has good ties with both. Ankara has called Russia’s invasion unacceptable and offered to host talks, but has opposed sanctions on Moscow. In a statement after a one-hour phone call, the Turkish presidency said Mr Erdogan told Mr Putin that Turkey was ready to contribute to a peaceful resolution of the conflict. “P…