The latest stories from the World section of the BBC News web site.
Updated: 7 min 47 sec ago
Boston marks the anniversary of the deadly bombing at last year's marathon, honouring the dead and lauding the strength of the survivors.
Somali refugee children's letters of hope to homeless Syrians
Son of slain Sikh leader running for US Congress
Trying to get into Europe from Morocco
Spain asks for more help from the European Union as the number of migrants illegally scaling the border fence into Spain increases.
Authorities in Kiev announce the start of an "anti-terrorist operation" against pro-Russian separatists, as Moscow warns that Ukraine is on the brink of civil war.
The abandoned hamlet its mayor wants to give away
The New York Police department shutters a secret programme designed to listen to and track Muslims in the city's neighbourhoods to identify threats.
Lewis Hamilton is driving as well as at any time in his career, according to Mercedes co-team boss Paddy Lowe.
The UK bears "a degree of responsibility" for the failure to prevent a raid in Afghanistan in 2012 that left two US marines dead, MPs say.
Members of the UN Security Council view graphic photographs of prisoners allegedly tortured by Syrian government forces.
North Korean officials have paid a visit to a London hair salon to question why it had used their leader Kim Jong-un's picture in a poster offering haircuts.
Report shows how foreign fighters in Syria are using social media
Arsenal come from behind to beat West Ham and move back above Everton into the top four of the Premier League.
Masked gunmen kidnap Jordan's ambassador to Libya in the capital, Tripoli, in an attack that left his driver wounded, officials say.
Five college student have been killed in a late night knife attack at a house party in Canada.
The son of a long-serving policeman is arrested in connection with the stabbing death of five people at a house party in Calgary, police in the Canadian city say.
Shares in the struggling internet search giant Yahoo surge 9%, despite first-quarter profits falling 20%.
An Atlantic City, New Jersey, casino sues professional poker player Phil Ivey, accusing him of winning $10m (£6m) by cheating at baccarat.
New street art by "guerrilla artist" Banksy is removed within hours of appearing in Bristol.