More than 60 people have died in attacks in and around Baghdad, apparently targeting Sunnis, in the worst day of violence in Iraq for months.

For the week ending 17 May, here is a look at the news making waves in America - all in 140 characters or less.

Congress, Beyonce's baby and Toronto mayor in 140 characters

Argentina grapples with legacy of late military leader Videla

Conservative protesters have broken up a gay rally in the Georgian capital Tbilisi.

The UN's refugee agency says that more than 1.5m people have fled the conflict in Syria, and warns the total is likely to be far higher.

The mayor of the Canadian city of Toronto, Rob Ford, denies allegations that he has been caught on video smoking crack cocaine.

The mayor of the Canadian city of Toronto, Rob Ford, denies allegations that he has been caught on video smoking crack cocaine.

Stoke City are to investigate after reports that a pig's head was left in striker Kenwyne Jones's locker.

A university student dies after being fatally shot as a masked gunman bursts into her home in an apparent attempted robbery in New York state.

The latest international business headlines from BBC World News.

The future of the inquest into the death of ex-KGB agent Alexander Litvinenko is in doubt after the coroner rules he cannot consider whether the Russian state was responsible.

The inquest into the death of ex-KGB spy Alexander Litvinenko could be replaced by a form of public inquiry to allow evidence about Russia's alleged role in the killing to be heard in secret.

Senior US tax officials deny the extra scrutiny given to conservative political groups ahead of the 2012 election was motivated by partisan bias.

Senior US tax officials deny the extra scrutiny given to conservative political groups ahead of the 2012 election was motivated by partisan bias.

Air raids target a militant training camp in north-east Nigeria as a military plane is hit by anti-aircraft fire, officials say.

After years of conflict, it can be difficult to imagine the people of Mogadishu enjoying a nightlife.

The extradition of fugitive Andrew Moran is delayed by an investigation into separate charges by Spanish police.

Slovenia pushed by markets and voters to mend economy

Slovenia pushed by markets and voters to mend economy