The latest stories from the World section of the BBC News web site.
Updated: 12 min 10 sec ago
The United States and Nato accuse Russia of stoking violence in eastern Ukraine.
Liverpool are drawn against holders Real Madrid as Manchester City get a tough draw in the Champions League.
Nato releases satellite images which it says show Russian forces inside Ukraine to help rebels fight government troops - a claim Russia denies.
Recep Tayyip Erdogan is officially sworn in as Turkish president after winning the country's first ever public vote for head of state.
Britain's women break the national 4x100m record while James Dasaolu comes third in the 100m at the Zurich Diamond League.
Russia responds to a Canadian geography lesson
Nigeria has recorded its first Ebola death outside Lagos after a doctor died of the virus in the oil hub of Port Harcourt.
A study of genetic sequences sheds light on the settling of the North American Arctic, from ancient "Paleo-Eskimos" to the modern-day Inuit.
Nigeria's President Goodluck Jonathan formally launches a national electronic identity card, which can also be used to make payments.
Real Madrid's Cristiano Ronaldo wins Uefa's Best Player in Europe Award ahead of Manuel Neuer and Arjen Robben.
There has been a "significant" increase in net migration into the UK, which reached 243,000 in the 12 months to March, government statisticians say.
Pakistani police name Prime Minister Nawaz Sharif as a suspect in the murder of 14 followers of an anti-government cleric in Lahore, officials say.
Egypt has opened an investigation into ousted President Mohammed Morsi for allegedly handing over secret files to Qatar, state media report.
Zambia's leader sacks his justice minister, seen as a potential successor, amid rumours the president is gravely ill.
Tory MP Douglas Carswell has defected to the UK Independence Party - and says he will seek re-election in Clacton at a by-election.
Ukraine accuses Russia of deploying troops in the country's east, while Nato says Russia has stepped up its arms supply to separatists.
Caf declares there will be no further changes to September's Nations Cup qualifiers despite some relocation requests over Ebola fears.
Armed police dramatically raid the office of a video gamer near Denver, US - and the incident was broadcast live online.