People release white doves  in memory of those who died in a fire at a trade union building two years ago. Photograph: Anatolii Stepanov/AFP/Getty Images

Scuffles, arrests, a bomb scare and high security overshadowed events in the Ukrainian city of Odessa yesterday to mark two years since vicious street(...)

Campaigner Adi Roche delivers an impassioned plea to the United Nations general assembly in New York on the 30th anniversary of the Chernobyl nuclear disaster. Photograph: Simon Carswell

Campaigner Adi Roche delivered an impassioned plea to the United Nations general assembly in New York on the 30th anniversary of the Chernobyl nuclear(...)

Ukrainians light candles at the memorial for ‘liquidators’ who died during cleaning up works after the Chernobyl nuclear power plant disaster, during a ceremony in Slavutich city, some 190km north of the capital Kiev on Tuesday. Photograph: Sergey Dolzhenko/EPA

Ukraine held memorial services on Tuesday to mark the 30th anniversary of the Chernobyl nuclear disaster, which permanently poisoned swathes of easte(...)

In Switzerland, the only peaceful country to adopt an all-party administration, parliament uses a “magic formula” to give  parties seats  on the seven-person Federal Council.  Introduced in 1959, this “zauberformel” has worked quite well.

Every four years or so, democracy involves a change of parliament. Five million citizens cannot negotiate a new Dáil; there would be chaos; so we have(...)

French  police officers, military personnel and rescue helpers attend an exercise simulating a chemical terrorist attack in view of the Uefa Euro 2016 soccer championship  in Toulouse, southern France. Photograph: Guillaume Horcajuelo/EPA

In the wake of jihadist attacks that killed 148 people in France last year, and in the run-up to the Euro 2016 football championship that will bring m(...)

Supporters of Serbian far-right leader Vojislav Seselj during a rally in Belgrade last month. Photograph: Alexa Stankovic/AFP/Getty Images

When Serbian ultranationalist Vojislav Seselj was controversially cleared of war crimes last month, cheers were heard far to the east of Belgrade. “(...)

UK justice secretary Michael Gove has accused the Remain side of running an overwhelmingly negative and pessimistic Brexit campaign, portraying Britain as “beaten and broken”. Photographer: Chris Ratcliffe/Bloomberg

A British vote to leave the European Union could prompt other member states to follow suit, ushering in “the democratic liberation of a whole contine(...)

Ukrainian pilot Nadezhda Savchenko. She was sentenced last month to 22 years in prison in Russia over her alleged role in the deaths of two Russian journalists. Photograph: AP Photo/Ivan Sekretarev

Ukrainian president Petro Poroshenko said on Tuesday he and Russian counterpart Vladimir Putin had agreed a framework for a deal to secure the release(...)

Russian servicemen Yevgeny Yerofeyev and Alexander Alexandrov look out from a glass-walled cage during a court hearing in Kiev, Ukraine. Photograph: Valentyn Ogirenko/Reuters

A Ukrainian court on Monday sentenced two Russian servicemen, captured in Ukrainian territory last May, to 14 years in prison on charges relating to t(...)

The London skyline. A new bus tour wants to show how money routed through secret accounts in places like the British Virgin Islands is later laundered through London’s  property market. File photograph: Dominic Lipinski/PA Wire

The bus tour starts near Whitehall, across the river from the London Eye and around the corner from the Palace of Westminster, Big Ben and Westminster(...)