President Donald Trump has opened his four-day Middle East trip by visiting Saudi Arabia's de facto ruler, Crown Prince Mohammed bin Salman.

The U.S. President is embarking on a four-day trip to Saudi Arabia, Oman, and Qatar with a $1 trillion wish-list.

U.S. President Donald Trump touched down in Saudi Arabia on the first stop of four day visit to the region, the first major overseas trip of his second term, with a focus on securing big investments in the United States.