India, Sept. 17 -- President Donald Trump has arrived in the United Kingdom for his state visit, where he will be met with full royal honors at Windsor Castle. His arrival comes with one of the largest security operations mounted for a visiting US president. The state visit comes just days after the assassination of Trump ally Charlie Kirk at a TPUSA event in Utah, which has heightened concerns for the president's safety.

The scale of the security effort is similar to Trump's first state visit in June 2019, when more than 6,000 Metropolitan Police officers were deployed at a cost of £3.4 million, according to the BBC. Thousands of officers have again been mobilized alongside around 60 US Secret Service agents, directly protecting th...