• Pakistan is also grappling with a disaster, the explosion of an overturned oil tanker that killed at least 140 people and seriously injured more than 50 others.

The victims had been collecting the fuel spilling from the tanker for about 45 minutes when something — a spark or tossed cigarette — set it off. “We kept on telling people to leave the crash site,” a police official said, “but people wouldn’t listen and more kept coming.”

And in London, regulatory failures appear to have allowed the use of flammable cladding that channeled the lethal blaze at Grenfell Tower last week, which killed at least 79 people.