Trump Aims to Strengthen Saudi Ties With Visit

RIYADH, Saudi Arabia—President Donald Trump and King Salman bin Abdulaziz Al Saud of Saudi Arabia signed an estimated $110 billion of new arms deals on the first day of Mr. Trump’s first trip overseas since taking office, a move aimed at strengthening economic and security ties with a critical ally in the Middle East.

The U.S. and Saudi leaders also agreed to commit to $350 billion more in defense cooperation over 10 years, and…