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

President Donald Trump opened his four-day Mideast trip on Tuesday arriving in Saudi Arabia, the first leg of his three-nation visit this week meant to tackle multiple crises and conflicts across the region.

Saudi Arabia, Qatar and the United Arab Emirates—plan to announce dozens of agreements with the U.S.