He was speaking after US President Donald Trump repeated claims Kyiv was "using war" to avoid elections.

Donald Trump, who brokered an earlier ceasefire, says he plans to "make a phone call" to stop the fighting.

Donald Trump, who brokered an earlier ceasefire, says he plans to "make a phone call" to stop the fighting.

The US's new National Security Strategy suggests Europe is facing "civilisational erasure".

The US's new National Security Strategy suggests Europe is facing "civilisational erasure".

Millions of Australian teens will no longer be allowed to use social media. Who wins and who loses out?

Some children have already died and only a minority who inherit the mutation will escape cancer in their lifetimes.

Some children have already died and only a minority who inherit the mutation will escape cancer in their lifetimes.

The new law requires tech platforms to ensure that Australians aged under 16 don't hold accounts.

The new law requires tech platforms to ensure that Australians aged under 16 don't hold accounts.

Teenagers affected by Australia's under 16 social media showed the BBC what happened when they tried to access their accounts.

His groundbreaking field research was instrumental in banning the international ivory trade and protecting elephants from poachers.

His groundbreaking field research was instrumental in banning the international ivory trade and protecting elephants from poachers.

Scuffles broke out during a vote linked to attempts to reduce the former president's jail term.

The president says he is focused on "making America affordable again", as cost of living becomes a campaign issue.

The president says he is focused on "making America affordable again", as cost of living becomes a campaign issue.

The incident in Australia comes after the man was jailed for nine days and deported from Singapore for public nuisance.

The incident in Australia comes after the man was jailed for nine days and deported from Singapore for public nuisance.

Poverty in Sierra Leone is pushing more students into risky work, which proved deadly for two boys.

Rishabh Rajput and Sonali Chouksey received congratulatory messages peppered with "jokes and memes".