2017 United States–Saudi Arabia arms deal: On May 20, 2017, U.S. President Donald Trump and Saudi Arabia's Salman bin Abdulaziz Al Saud signed a series of letters of intent for the Kingdom of Saudi Arabia to purchase arms from the United States totaling US$110 billion immediately,[1] and $350 billion over 10 years.[2][3] The intended purchases include tanks, combat ships, missile defense systems, as well as radar, communications and cybersecurity technology. The transfer was widely seen as a counterbalance against the influence of Iran in the region[4][5] and a "significant" and "historic" expansion of United States relations with Saudi Arabia.