内容摘要："Canada is a safe, secure and reliable partner in an uncertain world," Trudeau said this week. The alternative, he said, "would be more resources from Russia, China or Venezuela".

"Canada is a safe, secure and reliable partner in an uncertain world," Trudeau said this week. The alternative, he said, "would be more resources from Russia, China or Venezuela".

He also said he saw two commanders known to be senior RSF leaders in the area. BBC Verify put images of some RSF fighters through facial recognition software in an attempt to identify the individuals, but these searches returned no matches.The troops left locals in no doubt that the massacre had been carried out in response to Keikal's defection.

In one video a guard says in Arabic: "Keikal … look these are your people."We were able to match landmarks in this video such as trees and the shape of nearby buildings seen in the videos to satellite images of al-Seriha.In a further video - which couldn't be geolocated but first appeared online on 26 October - men wearing military fatigues with RSF insignia talk about Keikal's defection and refer to "traitors" in Gezira state. They specifically mentioned al- Seriha, adding that the town would get what it deserved.

At several points in the video, they refer to themselves using the Arabic word "ashawis" meaning the "brave ones", a term used by RSF fighters to identify themselves.When BBC Verify approached the RSF for comment, they denied those seen in the clips were their troops. "You can easily obtain a Rapid Support Forces uniform and wear it… then commit crimes against civilians, to criminalise the Rapid Support Forces," a spokesperson for the group said.

While it's not possible to rule this out, the BBC has seen three separate videos filmed by the fighters themselves, in which RSF insignia can be seen on the uniforms of those involved.

into the attacks on al-Sehira and other towns in Gezira state since Keikal's defection on 20 October, identified the RSF as the perpetrators.More than nine million people have been forced to flee their homes and there are fears of a widespread famine as people have not been able to grow any crops.

There have also been warnings of a possible genocide against non-Arab communities in the western region of Darfur.Cholera is a fast-developing and highly contagious disease. It can cause diarrhoea, dehydration and death, according to the World Health Organization (WHO).

It is relatively easy to cure, but rapid treatment is essential.Health Minister Haitham Mohammed Ibrahim declared a cholera outbreak in mid-August.