Saudi Arabia will host a Gulf-US summit in mid-May, part of US President Donald Trump's first visit to Saudi Arabia during his second term. This follows the summit held on May 21, 2017, during Trump's first term.The summit, hosted by Saudi Arabia in its capital, Riyadh, was preceded by numerous predictions regarding the announcement that Trump referred to, describing it as a "very important announcement" during a meeting with Canadian Prime Minister Justin Trudeau at the White House on Tuesday, May 6.In addition to what Trump intends to announce, the summit's agenda and the deals and agreements expected to take...