The United States and Saudi Arabia have discussed Riyadh's potential purchase of Lockheed's F-35 jets, two sources briefed on discussions told Reuters, referring to a military aircraft that the kingdom has reportedly been interested in for years.

Trump is in Saudi Arabia leading a large delegation of top officials from his administration and leaders in the business world.

The US and Saudi Arabia signed a massive arms deal, amounting to nearly $142 billion, an agreement being called by the White House as the largest in history.