The agreement is intended to give US companies a central role in developing Saudi Arabia's nuclear infrastructure and is estimated to be worth tens of billions of dollars; A key clause would allow U.S. companies to build a uranium enrichment facility there

President Donald Trump has approved an agreement with Saudi Arabia that could potentially provide the kingdom with uranium enrichment capability for its civilian nuclear program.

The agreement gives American companies priority access to nuclear reactors and fuel to Saudi Arabia. It's expected to last decades and be worth billions of dollars.