You're listening to the BBC World Service. I'm Anna Foster in the city of

Devow in the Philippines and this is the other caliphate.

This place is absolutely buzzing on a Friday night and as you walk through the stalls, the main point of this market is food and there are just skewers of tuna, fresh tuna, shining calamari. There are little parcels of rice wrapped in banana leaves.

You can hear around me the sound of people enjoying their Friday night.

They're getting involved, they're eating, they're drinking, they're laughing, they're meeting their friends.

And clearly, the culture of security, the fact that you can see these armed vehicles, these armed officers,

the fact that you have to walk through the search point to come in all of that looks

like it's really making a difference to the way people feel about the safety of

being in the market.

If I can describe the September 2nd. the safety of being in the market.

If I could describe the September 2 2016 bombing,

it was heartbreaking for me as a reporter.

It's hard for me to cover. Everything was shocked. The people

was shocked when it happened. The impact of terror on the island of Mindenau is

clear. You see it at the Rojas Night Market, changed forever by a bomb attack,

and in the destroyed city of Marawi, where the long violent struggle for an Islamic

caliphate became a reality for five months back in 2017. For the next hour

we'll hear directly from those who attacked their own people there and search for

the extremists who traveled across the globe in search of a bigger dream.

And with rare access to one of the country's toughest prison wings,

we'll see close up the work they're doing to pull hearts and minds away from a violent ideology.

That night I opened my my cell phone

...