You're listening to the Global News Podcast from the BBC World Service.

Hello, I'm Oliver Conway.

This edition is published in the early hours of Wednesday the 4th of September.

The Ukrainian president has vowed revenge for a missile strike on a military academy that killed more than 50 people.

A former aide to the governor of New York has been charged with acting as an agent for China,

and France has called for a new migration agreement with Britain

after 12 people died trying to cross the channel by boat.

Also in the podcast, 800,000 children in this country know the name of Nicholas Winton.

I hope, you know, in another 100 years people will know who Nicholas Winter was.

Prague honours the man who rescued hundreds of Jewish children from Nazi occupied

Czechoslovakia.

But we begin with an update on that breaking news that came in as we recorded our earlier podcast a Russian missile attack on the central city of Poltava many

kilometers from the front line.

The Ukrainian authorities now say more than 50 people died and more than 200 were injured

when two ballistic missiles hit a military academy and nearby hospital.

Service personnel were among those killed,

an investigation is underway amid claims an outdoor ceremony had been targeted.

It's one of the deadliest attacks in two and a half years of war and President Zelensky vowed to hold quote Russian scum to account.

These residents describe the moment the missile struck.

The air raid alert started in just a minute and then there were two explosions and

we thought it was somewhere on our house. Then we got ready to go outside and realize that it was the communications institute.

At home we immediately ran into the bathroom with the child

...