Picture desk live: the day's best news images

British bobbies and armed police officers were both on the scene at Tottenham Court Road, London, when a 50 year old man threatened to blow himself up with gas canisters strapped to his body
Photograph: Oli Scarff/Getty Images

Bomb blasts in Dnipropetrovsk, Ukraine, injured 14 people – the bombs were hidden in rubbish bins Photograph: Reuters

Dressing up as Lady Gaga is as much fun as listening to her sing for fans attending the launch of the pop star's Born This Way Ball world tour in Seoul, South Korea Photograph: Jung Yeon-Je/AFP/Getty Images

Supporters of jailed opposition leader Yulia Tymoshenko carry a huge flag bearing her image during an opposition rally in Kiev. Ukrainian President Viktor Yanukovych announced his government would investigate the alleged abuse suffered by Tymoshenko amid growing western concerns over the former premier's hunger strike Photograph: Sergei Supinsky/AFP/Getty Images

Wonder if the PR team who thought up the Boris Bike sponsorship for Barclays imagined they would be used in quite this way as protesters dressed as suited eagles make their point at the bank's AGM in London Photograph: Oli Scarff/Getty Images

A woman and her child wait to register outside the Yida refugee camp in South Sudan. After a renewed offensive by the Sudan People’s Liberation Army–North in South Kordofan, thousands of people from the Nuba Mountains have fled to Yida to escape the fighting and retaliatory airstrikes by Khartoum's Sudan Armed Forces
Photograph: Adriane Ohanesian/AFP/Getty Images

The UN secretary general, Ban Ki-moon, reads a note as his wife, Yoo Soon-taek, puts out a pair of slippers during their three-day official visit to India Photograph: Kevin Frayer/AP

The widely criticised F1 Grand Prix in Bahrain has ended but protesters continue their struggle against the government Photograph: Hasan Jamali/AP

Despite heavy rains the rivers and reservoirs are running empty. All this rain, we are told, does little more than water the plants or as in this picture, wash the road outside the Ship Inn, Acaster Malbis in Yorkshire Photograph: John Giles/PA

Is it a bird, is it a plane, no it is a bear falling out of a tree. The bear had wandered into the University of Colorado in Boulder and dropped out of the tree after being tranquilised by wildlife officials. The bear wasn't injured Photograph: Andy Duann/AP

This composite of images issued by the Metropolitan police shows a yoga specialist attempting to lock himself into a sports holdall unaided. This image was shown to the jury during the inquest of MI6 spy Gareth Williams Photograph: PA

The Arab Spring continues into its second year in the Yemen as thousands of protesters take part in a demonstration in Sana'a demanding the dismissal of former president Ali Abdullah Saleh's relatives from powerful military positions Photograph: Yahya Arhab/EPA