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.

A Saudi American summit opened in the capital Riyadh on Tuesday in the presence of US President Donald Trump and Crown Prince Mohammed bin Salman, according to Saudi media. Al-Ikhbariya TV said the official summit is taking place at the Al-Yamamah Palace in Riyadh, during which new agreements between the two countries will be signed.