Photo highlights of the day

The Kenya Wildlife Service (KWS) take measurements of the canine teeth on a tranquilized lion, in Nairobi National Park.

The Kenya Wildlife Service take measurements of the canine teeth on a tranquilized lion in Nairobi National Park. Photograph: Ben Curtis/AP

Children swimming in a river near the Central African village of Bobangui. Photograph: Jerome Delay/AP

An Afghan farmer works in turnip fields on the outskirts of Mazar-e-Sharif, Afghanistan. Photograph: Mustafa Najafizada/AP

Top table: Austrian businessman Richard Lugner announces his special guests for the upcoming Vienna Opera Ball in Austria. Guests include Miss World 2011 Ivian Sarcos of Venezuela and Kim Kardashian. Photograph: Herbert Neubauer/EPA

Gas clouds seen atop Mount Etna as red hot lava flows down the snow-covered mountainside in Sicily, Italy. Photograph: Marco Restivo/Barcroft Media

Crows fly past as an Indian army band conductor during a rehearsal of the Beating Retreat ceremony in New Delhi, India marking the end of Republic Day festivities.

Crows fly past an Indian army band conductor during a rehearsal of the Beating Retreat ceremony in New Delhi, marking the end of Republic Day festivities. Photograph: Manish Swarup/AP

Residents disembark a boat after being transported from flood-hit area of Muchelney in Somerset, UK. Photograph: Ben Stansall/AFP/Getty Images

The Olympic torch is tested before the start of the 2014 Winter Olympics in the Olympic Park in Sochi, Russia. Photograph: David J. Phillip/AP

A policeman detains a squatter dweller during clashes in Quezon city, Manila. Dozens were hurt during clashes triggered by the demolition of a squatter settlement to make way for business developments.

A policeman grabs hold of a squatter dweller in Quezon city, Manila. Dozens were hurt during clashes triggered by the demolition of a squatter settlement to make way for business developments. Photograph: Erik De Castro/Reuters

Cody Thomsen flies high above the crowds as he races in the Snowmobile SnoCross finals during the Winter X Games in Aspen, Colorado. Photograph: Michael Ciaglo/AP

Jude Law arrives at the Old Bailey to give evidence at the ongoing phone-hacking trial.

Jude Law arrives at the Old Bailey to give evidence in the ongoing phone-hacking trial. Photograph: Suzanne Plunkett/Reuters

An American pilot performs a stunt during the Ilopango Air Show 2014 in San Salvador

Close encounter: an American pilot performs a stunt during the Ilopango air show in San Salvador. Photograph: Oscar Rivera/Xinhua Press/Corbis

A farmer sells a peach blossom in Hanoi as Vietnamese prepare to celebrate Tet holiday or the Lunar New Year

A farmer sells peach blossom in Hanoi as Vietnamese people prepare to celebrate the lunar new year. Photograph: Hoang Dinh Nam/AFP/Getty Images

A Holocaust survivor walks inside Auschwitz before a ceremony to mark the 69th anniversary of the liberation of the concentration camp and to remember the victims of the Holocaust. Photograph: Kacper Pempel/Reuters

A police officer stands guard at the Malecon in Havana, Cuba. Leaders from Latin America and the Caribbean are arriving in Havana for the Community of Latin American and Caribbean States, or CELAC summit.

A police officer stands guard at the Malecon in Havana, Cuba. Leaders from Latin America and the Caribbean are arriving for the CELAC summit. Photograph: Desmond Boylan/AP

A competitor in a donkey cart race flexes before a 4km sprint in Rawalpindi, Pakistan.

A competitor in a donkey cart race flexes before a two-mile sprint in Rawalpindi, Pakistan. Photograph: Anadolu Agency/Getty Images

Katy Perry performs at the 56th annual Grammy Awards in Los Angeles. Photograph: Mario Anzuoni/Reuters

A protester sits behind a barricade of tyres as riot police stand in a line during an anti-government protest during another day of anti-government protests in Kiev.

A protester sits behind a barricade of tyres during another day of anti-government protests in Kiev. Photograph: Zurab Kurtsikidze/EPA