Trump, 73, is likely to relish another meeting with the Queen, whom he called a “great, great woman” in June.

The president will also see other select members of the royal family on Tuesday night at Buckingham during a reception for the 70th anniversary of NATO.

Here’s what you need to know about Trump’s trip abroad.

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75th Anniversary of D-Day

Why is Trump Going to the U.K.?

President Trump will arrive in London late Monday night ahead of a two-day summit marking the 70th anniversary of NATO, which has been a cornerstone of international relations since World War II. The alliance of the U.S., Canada and much of Europe has also been a key deterrent against the Soviet Union and, later, Russia.

But Trump hasreportedly expressed skepticismabout NATO’s value — even wondering about leaving the organization entirely, according toThe New York Times— and he’s repeatedly, publicly complained about other member countries’ financial commitments to the alliance relative to the U.S.’ spending.

Other nations have increased their spending since Trump took office, however, with some officials crediting him.

Last week, the White House offered a rosy view of where things currently stand.

“The transatlantic relationship is in a very, very healthy place,” a senior administration official told reporters. “I think that will be the message, loud and clear.”

What is Trump Doing While in the U.K.?

The president is meeting with European leaders on Tuesday and Wednesday, including the Queen and other royals on Tuesday. The president will also meet with with French President Emmanuel Macron on Tuesday, German Chancellor Angela Merkel on Wednesday and hold additional meetings with Danish Prime Minister Mette Frederiksen and Italian Prime Minister Giuseppe Conte, as well as representatives from other European countries.

Trump will alsoreportedly meetwith British Prime Minister Boris Johnson.

Who will Trump meet from the royal family?

However,Meghan MarkleandPrince Harrywill miss the event while they’re on “family time” off from their royal duties. The American princess has yet to meet Trump, who called her “nasty” in response to her having described him a “misogynistic” during the 2016 presidential campaign. Meghan was on maternity leave when Trump last visited in June, following the birth of her son, Archie.

Donald Trump Jr., Lara Trump, Eric Trump, Ivanka Trump, Jared Kushner, and Tiffany Trump.Ivanka Trump/Instagram

Ivanka Trump, Donald Trump Jr., Tiffany Trump

Who from the Trump family will be there, too?

But while the president’s adult children — Donald Jr., Eric, Ivanka and Tiffany Trump — all accompanied him on his last trip in June,attending a palace banquet, White House officials tell PEOPLE that none of them are set to travel across the Atlantic this go-round.

Will there be protests?

source: people.com