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

I'm Bernadette Keo and at 14 hours GMT on Thursday the 26th of December,

these are our main stories.

Ceremonies are taking place around the Indian Ocean

to remember the devastating tsunami that happened on this day 20 years ago.

I felt that the waves took my daughter away. I was so mad at the sea. I can never forget it, no matter how many years have passed.

And military bloggers and aviation experts have suggested Russia shot down an Azerbaijani airline's plane.

Also in this podcast, how social media is spurring South Africa's criminal gangs to poach rare wild plants.

And the killer whale, who refused to let go of her dead calf for 17 days now has a new baby.

It's 20 years since a 9.1 magnitude earthquake struck Indonesia's Sumatra Island, triggering the deadliest tsunami in history.

More than 220,000 people in 15 countries across the Indian Ocean were killed.

Commemorations are being held around the region today.

Indonesia's Ace province was the worst hit.

In Banda Ache, people have been praying at a mass grave.

Urais Sirisuk, a mother who was attending the memorial event in Thailand,

lost her four-year-old daughter.

I felt that the waves took my daughter away.

I was so mad at the sea. It's very difficult for a mother to lose their child. It's tough. I can never forget it, no matter how many years have passed until I die. Our Southeast Asia correspondent, Jonathan Head, who's in Bangkok, covered the events 20 years ago. How does he look back at that time?

Actually, I think that when I sort of got away from it and reflected on it, I was astonished at

human endurance and resilience in the face of something that nobody really could comprehend.

I mean, we knew what had happened, but, you know, when you're looking at death and grief on the scale that we were, it was very, very difficult to process. But people kept going. We were, of course, able to go in. It was quite difficult, particularly in Ache, where everything had been destroyed. It was difficult even to find a place to stay in because all the

buildings were damaged and could collapse. Everything had basically been destroyed in the city,

...