US President Donald Trump signed a $142bn defense sales agreement in Saudi Arabia on Tuesday as he continued to push the kingdom to pour a trillion dollars of investment into his country.

Trump, who was treated to an escort of several Saudi F-15 fighter jets upon his arrival, had been pushing Crown Prince Mohammed bin Salman to up a previously promised $600bn investment to an eye-watering $1 trillion.

The new arms deal, which includes exports of GE gas turbines and energy solutions totaling $14.2bn and Boeing 737-8 passenger aircraft totaling $4.8bn, goes some way towards fulfilling that aim.

One Saudi Arabian company also plans on to invest $20bn in AI-related sites in the United States, the White House said on Tuesday.