Donald Trump’s charitable foundation, which prosecutors allege served mainly to further his interests, is to be dissolved, another sign of the legal pressure bearing down on the US president.

The Trump Foundation was established in 1988 to distribute profits from Mr Trump’s best-selling book The Art of the Deal to charity. Instead, it has gained notoriety for using $10,000 of its funds to buy a life-size portrait of Mr Trump at a charitable auction hosted by the president’s golf club.