Jens Stoltenberg says the costs of war are high but the price of letting Moscow win is even greater.
President Emmanuel Macron fights a crunch parliamentary election against a green-left alliance.
The move by employees in Towson, Maryland, is the latest in a string of high-profile union campaigns in the US.
PM Mark Rutte said soldiers were underequipped to stop the murder of over 8,000 Muslim men and boys.
Rwandan journalists tell the BBC how oppression at home forced them to become refugees.
Anatoly Lazarev was at the heart of Russia's space rocket programme before he fled to Hungary.
As the US grapples with a formula crisis, parents are turning to the black market for supplies.
Biologist Lee White explains how creating national parks revived Gabon’s elephant population.
Temperature records have been broken in Spain and France as a heatwave sweeps across Europe.
Iman Vellani plays Marvel’s first Muslim superhero headliner and says she could relate to the role.
People in Sao Paulo took to the streets to condemn the killings and criticise the authorities.
A third suspect has been arrested after the deaths of Dom Phillips and indigenous expert Bruno Pereira.
The 75-year-old is already under judicial investigation in France for raping a minor and trafficking.
Kyiv's mayor says Russia's leader is destroying millions of lives in both Ukraine and Russia.
Members of Afghanistan's tiny Sikh community speak of their fears for their safety after the attack.
Temperatures soar as scientists warn heatwaves are striking earlier in the year due to climate change.
The US leader took a tumble after a cycle ride in Rehoboth Beach, Delaware, but said he was not hurt.
A paramedic captured by Russian forces during the invasion of Ukraine is freed after three months.
Ukraine should be given the chance to host the Eurovision Song Contest in 2023, the UK prime minister has said.
Boris Johnson says the contest should go ahead in Ukraine, even as organisers fear it will be unsafe.
A new survey reveals 52% of young Africans are considering emigrating - some of them told the BBC why.
A selection of powerful images from all over the globe, taken in the past seven days.
UK journalist Dom Phillips and indigenous expert Bruno Pereira went missing in the Amazon on 5 June.
His daughter Stephanie McMahon will serve as interim CEO at the wrestling entertainment firm.
Wikileaks founder Julian Assange’s extradition to the US is approved by UK Home Secretary Priti Patel.
The killing adds to fears of wider conflict as DR Congo accuses Rwanda of backing Congolese rebels.
The icon starred in Amour and other titles - and gained sympathy after the murder of his daughter.
The Russian president says the economic restrictions are "more harmful" to those who imposed them.
The European Commission backs Ukraine's candidate status, but says the country must make changes.
Energy firm Eni says it will only receive half the gas requested from Russia after two days of shortfalls.
France forced to import electricity as air-conditioners and fans switched on for record heatwave.
Protests in Secunderabad over a new plan to hire contract soldiers turned violent on Friday.
The latest UK figures cover the long weekend of partying and suggest one in 45 has Covid.
Remembering some of the 40 people killed in an attack on a church which shocked Nigeria.
The dog was trying to reach a pan of grease that the owners had left on the hob.
"We're about run out of our rope here," a frustrated Senator John Cornyn said as he left Washington.
Nepal is preparing to move its Everest base camp as the glacier it stands on becomes less stable.
Carbon-rich peatlands are under threat from development, posing a risk for future climate change.
The French president could lose his majority in the National Assembly because of a left-green alliance.
Changing tastes mean mushroom entrepreneurs are only just getting started.
A selection of the best photos from across Africa and beyond this week.
How closely have you been paying attention to what's been going on over the past seven days?
Brahim Saaudun and two Britons were captured by Russian forces while fighting for Ukraine.
Footage from Australia shows the woman stuck in a car suspended above the ground before she is arrested.
Falling incomes and soaring prices under the Taliban have left many struggling to feed themselves.
Government authorities have removed toys they say "promote homosexuality".
A 10-year-old boy is recovering in hospital after falling 18m down an open well in India.
Viktoria and her surviving child have been waiting for nearly 50 days to get a UK visa.
The fast food outlets are being rebranded as "Tasty and that's it" after the burger giant pulled out.
Following several recent school shootings, protesters - especially young people - demand change.