Ukraine's Sergey Bubk and Russia's Alexander Popov have said allegations against them relating to Rio's successful 2016 bid are false. Popov said he did not even vote for the Brazilian city, which beat Madrid.

Just as Ukraine is set for a new leader, Russia has offered passports to millions of Ukrainians. Experts say Moscow wants to cement power over occupied areas and stop population decline — but the move is a powder keg.

War in Donbass: Local youth turn their backs on Ukraine.

Amid corruption woes and conflict, voters in Ukraine are set to choose their next president. A TV comedian is currently leading the polls, but his victory is not a given.

World leaders have opened talks at the G20 summit in Argentina. A weekend of meetings is expected to be overshadowed by the contentious presence of the Saudi crown prince and tensions between Russia and Ukraine.

NATO members including Germany have been asked to send naval vessels to the Sea of Azov to back Ukraine against Russia. "Germany is one of our closest allies," President Petro Poroshenko said.

In four years of a simmering conflict in eastern Ukraine, some 2,000 people have been killed by landmines. Countless mines were laid in the chaotic early stages of the fighting.

Russian President Vladimir Putin and German Chancellor Angela Merkel met outside Berlin on Saturday for talks ranging from the conflicts in Ukraine and Syria, to Iran and a gas pipeline project that has drawn U.S. ire.

In today’s Debate we turn our eye to events in Ukraine these past few days, where officials announced the murder of Russian journalist Arkady Babchenko, only for him to appear – alive – on TV the following day.

Abuja chamber of commerce seeks $2bn investment from Ukraine.

Ukraine and pro-Russian separatist rebels have conducted the biggest prisoner swap since the war broke out in 2014. It fulfills a key part of a two-year-old ceasefire deal.

North Korea offers a glimpse into its plans to fire missiles near Guam, as the Ukraine denies claims that it supplied weapons technology to the reclusive state.