Stocks around the world tumbled and oil prices slumped after US President Donald Trump threatened to raise tariffs on China, triggering an investor exodus from risky assets.

Police say 18 people, including 10 children, have been killed in an explosion at an illegal fireworks factory in western India.

The opposition Congress party and its allies scored unexpectedly strong gains in India’s Parliament elections as the nail-biting finale to the polls seemed to be heading for an upset.