Ihor Brusylo told the BBC's Jeremy Bowen that US President Donald Trump's stance on the war was "alarming".
A goat in Madrid was rescued by firefighters after it became trapped on a window sill of a tower block.
The BBC's Analysis Editor Ros Atkins looks at why the US wants access to Ukraine's minerals.
European leaders met at the Elysee Palace in Paris on Monday for an emergency summit on Ukraine.
Danielle McLaughlin, 28, from County Donegal, was found dead in the western state of Goa in March 2017.
Drone footage shows plumes of smoke and molten lava spewing from Europe's most active volcano.
A look from the police cordon in Munich, after a car drove at a group of people, injuring at least 28.
The BBC's Defence correspondent breaks down a drastic shift in Washington's position on the war in Ukraine.
Speed limits on some roads in the Republic of Ireland will be reduced to 60km/h (37mph) on Friday.
After an election win which has been widely criticised as illegitimate, Alexander Lukashenko faced questions from the BBC's Russia editor Steve Rosenberg.
Holocaust survivors have been marking 80 years since the liberation of the Nazi concentration camp, Auschwitz.
Tens of thousands of people demand action as they gather to remember the victims of Greece's worst railway disaster.
It's election day in Belarus - with Alexander Lukashenko set to continue his 31-year-long rule of the country.
BBC's Helen Willetts has the forecast after Storm Éowyn brought record-breaking winds.
Storm Éowyn brought gusts of up to 114mph (183 km/h) - causing travel disruption and leaving many in the UK and Ireland without power.
Verona Murphy called for a 15 minute suspension after Teachtaí Dála (TDs) refused to "stop shouting" at her and take their seats.
The Irish parliament sitting to elect a new taoiseach has been suspended after a row erupts over speaking rights.
At least 10 people have been injured when a ski lift failed in northern Spain.
The "once-in-a-century" find has been unearthed in the ancient Roman city.
Irish mountain farmers use their dogs to find their flock trapped under several feet of snow.
