This is the Global News Podcast from the BBC World Service.

I'm Valerie Sanderson and in the early hours of Tuesday the 27th of August,

these are our main stories.

As Russia again pounds Ukraine with missiles and drones, we report on Keeves Fightback.

The UN says it's been forced to halt its humanitarian operations in Gaza after Israel ordered the

evacuation of the area where aid workers are based. The World Health Organization

is optimistic that empox outbreaks in Central Africa can be controlled.

Also in this podcast we hear how AI is being used to develop treatments for dementia.

If we can reduce the costs to identify people at higher risk

using artificial intelligence like this project,

we'll hope to speed up the testing of treatments.

Russia's invasion of Ukraine is a war of attrition and its latest barrage of a hundred or so missiles and as many

drones again targeted energy infrastructure. President Selensky has called

for Allied assistance in shooting down Russian missiles.

Here's our international correspondent, Paul Adams.

This is not like the way it was two winters ago

when essentially the Russians were targeting the energy grid, but not so much the power generating

facilities themselves.

Once you knock out a power station, that takes years to repair if it can be repaired at all.

And now the country is limping along on a handful of its remaining power generation facilities.

One of those, the hydroelectric plant just north of Kiev was it seems one of the targets today

So it does seem as though this is part of a consistent pattern which frankly has been going on since the start of the war which is to steadily degrade Ukraine of its energy

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