Maria Kolesnikova, one of Belarus’s opposition leaders, who has been detained. Photograph: Dmitri Lovetsky/AP

Opposition activists in Belarus are demanding to know the whereabouts of high-profile protest leader Maria Kolesnikova, after she reportedly foiled a (...)

Russian journalist Arkady Babchenko (centre), who was reported murdered in the Ukrainian capital on Tuesday, Ukrainian Prosecutor General Yuriy Lutsenko (left) and head of the National Police Serhii Kniaziev attend a news briefing in Kiev on Thursday. Photograph: Reuters/Valentyn Ogirenko

Ukraine’s SBU security service has said that it faked the bloody murder of dissident journalist Arkady Babchenko to foil an alleged Russian plot to ki(...)

Volunteer fighter Amina Okuyeva, pictured in Kiev in 2014, who was killed in an ambush on Monday night.  Less than five months ago she was credited with saving her husband’s life, when she shot a suspected Chechen hit man. Photograph:  Daniel McLaughlin

Ukrainian officials believe Russia was behind an ambush near Kiev that killed prominent volunteer fighter Amina Okuyeva and injured her Chechen husban(...)

Police examine a crime scene after an explosion in which Ukrainian lawmaker Igor Mosiychuk was wounded and his bodyguard killed in Kiev on Wednesday night. Photograph: Stepan Franko/EPA

The Kremlin has denied being behind a bomb attack in Kiev that killed two people and injured Ukrainian nationalist deputy Ihor Mosiychuk, in the late(...)

Smoke and flames rise over a warehouse storing ammunition for multiple rocket launcher systems at a military base in the town of Kalynivka in Vinnytsia region, Ukraine. Photograph: Yurii Basiuk

Pressure is mounting on Ukraine’s political and military leaders after the second major explosion this year at a key ammunition depot, which one of th(...)

Kiev’s main thoroughfare. Ukraine has been used for years by Russia as a testing ground for politicised cyber operations that later cropped up in other countries. Photograph: Brendan Hoffman/New York Times

The hacker, known only by his online alias “Profexer”, kept a low profile. He wrote computer code alone in an apartment and quietly sold his handiwork(...)

Ukrainian oligarch Dmytro Firtash: made a fortune selling Russian gas to Ukraine before being arrested in Austria in March 2014. Photograph:  Heinz-Peter Bader/Reuters

An Austrian court has ruled that one of Ukraine’s richest men, Dmytro Firtash, can be extradited to the United States on corruption charges the Russi(...)

Viktor Shokin, who has been fired as prosecutor general of Ukraine after an overwhelming vote in parliament. He was  accused of blocking major cases against allies and influential figures and stymying moves to root out graft. Photograph: Roman Pilipey/EPA

The European Union has welcomed the dismissal of Ukraine’s scandal-ridden prosecutor general and called for a crackdown on corruption, even as the cou(...)

Former Sevodnya daily newspaper chief editor Oles Buzina, who was shot by two gunmen near  his home in Kiev on Thursday.  Photograph: Oleg Petrasyuk/EPA

A prominent Ukrainian journalist known for his pro-Russian views was shot dead on Thursday in Kiev by two masked gunmen, the interior ministry said, a(...)