Trump will join Queen Elizabeth II and Prime Minister Theresa May at Portsmouth Naval Base, which served as a key launch pad for the forces that would land on Normandy. It will be the first of two events commemorating the 75th anniversary of D-Day that Trump is attending this week.
The day is normally a heartfelt tribute to unity and sacrifice, outweighing any national or political skirmish. But some on both sides of the Atlantic are nervous about Trump, who has shown a willingness to inject partisanship into such moments. Trump is scheduled to make a brief address.