Tim Pawlenty Tim Pawlenty, ex-Governor of Minnesota, announces his candidacy for the Republican nomination as President of the United States.
Local and regional elections In local and regional elections in Spain, the conservative People's Party performs well, while the ruling Socialist Party suffers heavy losses.
British government Police officers from more than 40 forces unveil plans for protests against funding cuts authorised by the British government, including a "national day of action" in July.
People continue to peacefully protest against cuts and unemployment in cities across Spain as the country votes in regional elections; the number of participants increases despite a government ban on such occurrences.
2011 Georgian protests Protesters reportedly attack a government-controlled television building in the western city of Batumi.
Approximately 10,000 protesters march in Tbilisi and Batumi calling for early elections and the ouster of President Mikhail Saakashvili.
UK Attorney General The Attorney General for England and Wales is being asked to consider prosecuting a journalist who allegedly broke a privacy order on Twitter in respect of another footballer who has taken out an injunction.
The Sunday Herald Scottish newspaper "The Sunday Herald" names a footballer accused of being linked to a privacy superinjunction by users of social networking website Twitter, arguing that the injunction is only enforceable under English law and does not apply in Scots law.
Hamid Baqai Hamid Baqai, the Chief of Staff of the Iranian President, is banned from public office for four years, after it was exposed that he was involved in a multi-million dollar embezzlement during the construction of a building on Kish Island in 2010.
Prime Minister of Japan The Prime Minister of Japan Naoto Kan, the Premier of China Wen Jiabao and the President of South Korea Lee Myung Bak meet in Japan and agree to improve cooperation on nuclear and economic issues.
Patients are evacuated from St John's Regional Medical Centre in Joplin due to damage caused by the tornado.
Jay Nixon, the Governor of Missouri, declares a state of emergency in the state following the Joplin tornado and activates the Missouri National Guard.
The city of Joplin, Missouri, is hit by a tornado, causing "major damage" in the downtown area and at least 30 fatalities.
Tornados hit the city of Minneapolis, Minnesota, damaging scores of homes and killing at least one person.
Government of Iceland The Government of Iceland imposes a flight ban, following the eruption of Iceland's most active volcano, Grímsvötn.
Princess Beatrice The infamous hat worn by Princess Beatrice at the 2011 Royal Wedding has been sold on auction site eBay for £81,100.01. Funds raised from the sale will go to the charities UNICEF and Children in Crisis.
BBC The BBC television series "Sherlock" wins two prizes at the 2011 British Academy Television Awards ceremony in London, including best drama series.
The Tree of Life "The Tree of Life", directed by Terrence Malick and starring Brad Pitt, wins the Palme d'Or at the 2011 Cannes Film Festival.
Taliban The Taliban warn that Kazakhstan's decision to send troops to Afghanistan will have "severe consequences".
United Kingdom The UK's military operation in Iraq will officially end at midnight, after the Royal Navy completes its training of Iraqi sailors.
African Union African Union and Somali troops advance on Mogadishu's Bakara market, a rebel-held area, amid intense fighting.
Bomb A series of bomb attacks around the Iraqi capital of Baghdad kills at least 18 people, including 7 policemen.
Suicide bomber Gunmen wearing explosive suicide vests storm a government building in Khost, Afghanistan.
Civil war 2011 Libyan civil war: NATO warplanes attack the port of Tripoli and the residence of Libyan leader Muammar Gaddafi.
2011 Yemen protests The embassy of the United Arab Emirates is attacked in the capital Sana'a as it holds a meeting of Arab and Western mediators leading to an evacuation by helicopter.
Yemeni President Ali Abdullah Saleh reportedly refuses to sign a Gulf-brokered accord allowing him to resign within 30 days in exchange for immunity; the opposition signed the deal yesterday.