Ukrainian president visits Black Sea land mass where defenders famously defied a Russian warship at the beginning of the invasion; Turkey's Erdogan backs Ukraine joining NATO

Ukrainian president demands Russian troop withdrawal as condition for peace, calls for UN to ensure safety of Zaporizhzhia facility over fear of nuclear disaster

Ukrainian president to meet with Turkish leader and UN chief in western city of Lviv, hours after at least 11 killed in Russian missile strikes on Kharkiv region

Agriculture shipments okayed to set sail as part of ongoing UN-brokered deal, while war enters new phase with Ukrainian army trying to retake occupied cities in south

Kyiv fuming that Ankara did not impound ship as Turkey struggles to maintain relations both with Ukraine and Russia

Ukrainian official estimates at least 5,000 have died in besieged Mariupol, but number could be twice that; Russian negotiators arrive in Turkey ahead of peace talks

Erdogan advisor tells NY Times he believes Russian leader seeks 'stronger position' ahead of possible summit; British PM Johnson warns against 'renormalizing' ties with Moscow

Conversation comes following failed negotiations in Turkey between Ukrainian and Russian top diplomats, and President Herzog's visit to Ankara

Russia's Sergey Lavrov and Ukraine's Dmytro Kuleba set to meet in Antalya while President Isaac Herzog is visiting Istanbul and Ankara

Ankara has bought Russian weapons and depends on it for energy sources, but has also sold military drones to Ukraine, its closest regional post-Soviet ally