Polls have opened in Ukraine's presidential elections, with oligarch Petro Poroshenko and former prime minister Yulia Tymoshenko the front-runners.
The vote has been marred by fighting with pro-Russian separatists in the east of the country which means large numbers of the electorate will not be able to cast a ballot.
More top news
The Post Office's abandoned underground railway opens its doors on Friday some 14 years after the last letter was transported through it.
Drinking alcohol most days of the week can significantly protect against developing diabetes, a study has found.
Philip Hammond wants to maintain full access to the European single market and customs union in a transitional Brexit deal, say reports.