Indonesia Tsunami: Warning System Failed Victims

The BBC has learned that none of Indonesia's tsunami detector buoys was functioning at the time of Friday's devastating earthquake off Sulawesi. And, why Sulawesi's tsunami is puzzling scientists? We speak to a geophysicist .

Also on the programme: Donald Trump says the new trade deal struck with Canada and Mexico is "the most important" ever agreed by the US; and we talk to a survivor of the Las Vegas shooting.

(Photo: Volunteers filling a mass grave were instructed to prepare for a total of 1,300 victims to arrive. Credit: Getty Images)