Competition for dominance between the churches of Constantinople and Moscow in the Orthodox Christian world is not new — it goes back more than 500 years. But the birth of the new Orthodox Church in Ukraine opens a new chapter in this history.
US President Donald Trump's former campaign manager Paul Manafort breached his plea agreement with Special Counsel Robert Mueller's office by lying to prosecutors about matters which are material to its Russia probe, a judge ruled on Wednesday.
European countries, especially the Baltic states of Estonia, Latvia and Lithuania, have confronted Russian disinformation campaigns for decades. Their experience may offer useful lessons as the US joins the battle.
Ukraine on Friday banned Russian men of combat age from entering the country, a move introduced under martial law after Russia fired on and captured three Ukrainian naval ships off Crimea last weekend.
Ukraine on Monday imposed martial law for 30 days in parts of the country most vulnerable to an attack from Russia after President Petro Poroshenko warned of the "extremely serious" threat of a land invasion.
One of the many tensions in Ukraine has been over language. Ukrainian used to be considered the language of peasants, while Russian was the language of the educated. This story from our archives shows how the push-pull between Russia and Ukraine has been going on for many decades.
The rising price of oil and the growing demand for energy has prompted a new look at nuclear power -- even in the oil-rich Middle East, but there are limits to how fast nuclear energy can grow to meet that demand
For our Geo Quiz, we were looking for the name of the capital of Ukraine. The answer is Kiev. The BBC's Gabriel Gatehouse reports on a controversy a local TV show that asked viewers to name the greatest Ukrainian of all time.