Saudi Crown Prince Mohammed bin Salman promised on Thursday to pile $600 billion into US trade and investments as he congratulated Donald Trump on his return to the White House.

Prince Mohammed, de facto leader of the world's biggest oil exporter, made the pledge in a phone call following Trump's inauguration on Monday, state media said.

Trump forged close relations with Riyadh in his first term and is now expected to push Saudi Arabia, home of Islam's holiest sites, towards normalising ties with Israel as a major foreign policy objective.

"The crown prince affirmed the kingdom's intention to broaden its investments and trade with the United States over the next four years, in the amount of $600 billion, and potentially beyond that," the Saudi Press Agency reported.

It did not give details of the source of the funds, which represent more........

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