As it happened: Ukraine crisis

Key Points

• Ukrainian troops withdraw from the airport in the eastern city of Luhansk after heavy fighting with rebels
• Pro-Russia separatists gain ground around Donetsk and south around the port of Mariupol
• Ukrainian and Russian officials are due to hold talks with separatist rebels and international monitors in the Belarusian capital, Minsk
• Russia's foreign minister calls for talks on "immediate ceasefire" in Ukraine
• All times BST (GMT + 1 hour)