24 hours in pictures

Nabi Saleh, West Bank: A Palestinian man stands in a cloud of tear-gas during violent clashes with Israeli border policemen Photograph: Oliver Weiken/EPA

Mae Sot, Thailand: A boy with his face decorated with thanaka paste waits outside a school for children of migrant workers Photograph: Damir Sagolj/Reuters

Rotterdam, Netherlands: A Chinese gymnast performs on the rings at the men's training session at the World Gymnastics Championships Photograph: Bas Czerwinski/AP

Ciudad Juarez, Mexico: A man injects heroine at a "picadero", an abandoned house where addicts go to take drugs Photograph: Ronaldo Schemidt/AFP

Caracas, Venezuela: An artist with a suit of needles gets ready to perform at the 5th World Meeting of Body Art Photograph: Miguel Gutierrez/AFP

Ramot, Jerusalem: A Palestinian man works on a building site; Israel has approved the construction of 238 homes in Jewish neighbourhoods, ending an unofficial freeze on new building there for nearly a year Photograph: Tara Todras-Whitehill/AP

Berlin, Germany: A visitor stands behind the reflection of a bust of Adolf Hitler on the opening day of a new exhibition about the German leader Photograph: Gero Breloer/AP

Herat, Afghanistan: Afghan refugees pray at a mosque in the Maslakh refugee camp Photograph: Majid Saeedi/Getty

Sedrun, Switzerland: Workers watch as the second tube of the Gotthard tunnel is broken through. The tunnel is now the world's longest Photograph: Getty

Paris, France: French high school pupils protect themselves from smoke at clashes with police during a protest against pensions reform Photograph: Jeff Pachoud/AFP

Gaza Strip: Palestinian shepherds display their sheep at a market; more sheep and cattle are being sold in the run-up to a feast day. Photograph: Ali Ali/EPA

Kikuyu, Kenya: Schoolchildren wash their hands to mark the third annual Global Handwashing Day at Thirime primary school Photograph: Thomas Mukoya/Reuters