24 hours in pictures

Jacksonville, US: Barack Obama greets officers and sailors after speaking at the Naval Air Station Photograph: Gerald Herbert/AP

Hong Kong: Police officers in protective suits take part in a chemical, biological, radiological and nuclear field exercise for the East Asian Games Photograph: Tyrone Siu/Reuters

Tlalnepantla, Mexico: Members of 'The Voca People' Israeli band pose for photographs during their visit to the Teletón Children's Rehabilitation Centre Photograph: Alex Cruz/EPA

London: Shadow chancellor George Osborne looks through his speech on Britain's Economic Future during his tube journey to give a speech at Thomson Reuters in Canary Wharf Photograph: Andrew Parsons/Conservative Party

Melbourne, Australia: Ballet dancer Fernando Medina Gallego of 'Les Ballets Trockadero de Monte Carlo' prepares to put on his wig Photograph: William West/AFP/Getty

Prague, Czech Republic: A reflection of autumn trees in the Vltava river Photograph: Filip Singer/EPA

Queensland, Australia: A flock of budgerigars. Flooding earlier in 2009 has meant ideal breeding conditions and plentiful food supplies for the birds Photograph: Ann Britton/EPA

Kabul, Afghanistan: An internally displaced family inside their tent Photograph: Altaf Qadri/AP

Kunar province, Afghanistan: US soldiers fire mortars in the Pech Valley Photograph: David Guttenfelder/AP

Changzhi, China: A labourer searches for usable coal at a cinder dump site Photograph: Reuters

New Delhi, India: A model during the Wills Lifestyle India Fashion Week Spring/Summer 2010 Photograph: Anindito Mukherjee/EPA

Jerusalem: Israeli police officers during a patrol Photograph: Dan Balilty/AP

Ramallah, West Bank: A Palestinian boy wearing a military uniform and holding a toy gun in Al-Amari refugee camp Photograph: Muhammed Muheisen/AP