Two and a half centuries after the American colonies declared independence from Britain under King George III, his descendant King Charles III lands in Washington Monday with trans-Atlantic ties under strain and security in the spotlight.

A shooting at a Washington dinner attended by President Donald Trump on Saturday sparked a last-minute security review of the four-day state visit, intended to celebrate the United States' 250th anniversary, and the U.S.-U.K. "special relationship."

Iran's foreign minister was due to return to Pakistan on Sunday as international mediators try to keep peace talks on track despite U.S. President Donald Trump calling off his envoys' planned trip.

U.S. President Donald Trump said Saturday a shooting at the White House Correspondents' Association dinner would not deter him from the Iran war, although he believed the incident was unlikely linked to the conflict.

International efforts to mediate between the United States and Iran were in the balance on Sunday, after President Donald Trump canceled his envoys' planned trip to Pakistan for talks.

U.S. Secret Service agents bundled Donald Trump from the stage as shots rang out Saturday evening at a media gala, in what the president later described as an attack by a "would-be assassin."

U.S. President Donald Trump and other attendees at a glitzy media gala in Washington made a hasty exit Saturday night after gunshots were fired.

As details continue to emerge and investigations are underway, here is what we know about the shooting:

U.S. President Donald Trump announced he had cancelled his envoys' planned trip to Pakistan for peace talks with Iran on Saturday, but said that did not mean an immediate resumption of the U.S.-Israeli war against the Islamic republic.

Iran's defense ministry on Saturday said the United States was seeking a "face-saving" way to exit the war, as U.S. envoys travelled to Pakistan for peace negotiations.

U.S. envoys headed to the Pakistani capital Saturday to kickstart a new round of peace negotiations with Iran, although Iranian state media said Tehran's envoys had no immediate plans to hold face-to-face talks.

U.S. President Donald Trump is planning to send his special envoy Steve Witkoff and Jared Kushner to Pakistan to participate in talks with Iranian Foreign Minister Abbas Araghchi in the coming days, two administration officials tell CNN.

Vice President JD Vance is not currently planning to attend given Iran’s Speaker of the Parliament, Mohammad-Bagher Ghalibaf, is not participating either, the officials said. Ghalibaf is viewed internally by White House officials as the head of the Iran delegation and Vance’s counterpart.