US Secretary of State John Kerry leaves the stage after a group picture with foreign ministers and representatives from China, Iran, Britain, Germany, France, and the European Union at the Vienna International Center in Vienna, Austria on Tuesday
Steam rises at night from the cooling towers of the Electricité de France (EDF) nuclear power station in Dampierre-en-Burly
Workers wearing protective gear rest at the Tokyo Electric Power Co. (TEPCO) Fukushima Dai-ichi nuclear power plant, Okuma, Fukushima prefecture, northeastern Japan
Robin Van Lonkhuijsen/Reuters
The stage is set before world leaders have their family picture taken before the Nuclear Security Summit in The Hague, The Netherlands.
Protestors with a radioactive sign painted on their faces pose during a demonstration on the first day of the two-day Nuclear Security Summit in The Hague, Netherlands.
PEA ‘Denise’ in the north zone of the Mururoa Atoll, in the southern Pacific Ocean, where the French military conducted nuclear weapons tests until 1996. The Ministry of Defence has scheduled improvement works starting in late 2014 to monitor the seismic activity of the base amid fears the atoll may collapse
A Tokyo Electric Power employee wears a protective suit and mask to walk past storage tanks for radioactive water in the H4 area at the Fukushima Dai-ichi nuclear power plant in Okuma, Fukushima Prefecture, Japan.
An Iranian woman walks past a mural showing a gun painted with an interpretation of the American flag on the wall of the former US embassy in Tehran on Wednesday. Leaders from Iran and the United States have not met since the 1979 Islamic Revolution brought often open hostility to their contacts, particularly over Iran’s contested nuclear program.
People offer prayer for atomic bomb victims at a cenotaph at the Hiroshima Peace Memorial Park in Hiroshima, western Japan on Tuesday after the Peace Memorial Ceremony commemorating the 68th anniversary of the atomic bombing of the city in 1945.
A North Korean worker checks his mobile phone as a soldier stands in front along the banks of Yalu River, near the North Korean town of Sinuiju, opposite the Chinese border city of Dandong on Friday. China told a North Korean delegation that visited Beijing late last month that North Korea should stop conducting nuclear tests and focus on economic development, a source with knowledge of the talks told Reuters.
A female supporter of Iranian presidential candidate Saeed Jalili during an election campaign event at the Tehran University on Monday. Mr Jalili said that in case of an election victory he would make no compromise in the dispute over Iran’s controversial nuclear programme. Iran will hold presidential elections on June 14.
A Swiss Air Force helicopter on Tuesday transports a mobile water pump during an exercise in front of the nuclear power plant near the northern Swiss town Leibstadt. The Swiss Federal Nuclear Safety Inspectorate tested, in co-operation with the air force and the power plant operators, the transport of technical emergency equipment by air.
Mahesh Kumar /AP
India’s Central Industrial Security Force sub inspectors and executives of the 38th batch at National Industrial Security Academy march during their passing out parade on the outskirts of Hyderabad, India. The CISF is a paramilitary security force that provides security cover for nuclear installations, space establishments, airports, seaports, power plants, sensitive government buildings and heritage monuments in India.
Alexander F. Yuan/AP
A man, center, supervises a dancing group during a mass folk dance in front of the Pyongyang Indoor Stadium in Pyongyang, North Korea, Monday, April 15, 2013. Oblivious to international tensions over a possible North Korean missile launch, Pyongyang residents spilled into the streets Monday to celebrate a major national holiday, the birthday of their first leader, Kim Il Sung.
Jeff J Mitchell/Getty Images
Anti-Trident demonstrators block one of the entrances to Faslane naval base on April 15 2013 in Faslane, Scotland. Activists from across the country, calling for the Trident missile programme to be scrapped, converged on the home of Trident to blockade the gates, causing traffic disruption into the naval base.
Retired military officers of North Korea stand at attention during an induction ceremony for children into the Korean Children’s Union, the first political organisation for North Koreans, held at a stadium in Pyongyang on Friday.