Kate Middleton will be joining Queen Elizabeth II in her next royal engagement but without Prince William.

The Duke and Duchess of Cambridge have been attending several royal engagements together these past few days. However, in Middleton’s next duty, she will be with the other royals san her husband.

“The Queen, accompanied by The Prince of Wales and The Duchess of Cornwall, The Duchess of Cambridge, The Earl of Wessex, The Princess Royal, The Duke and Duchess of Gloucester and Princess Alexandra will welcome NATO leaders at a reception at Buckingham Palace,” royal correspondent Dickie Arbiter announced on Twitter.

According to Hello! the Duke of Cambridge will not be available for the event since he will be away. Prince William is due to make an official visit to the Middle East alone.

Although Prince William will not be there to join Middleton, his wife will be surrounded by other senior royals. Aside from Prince William, Buckingham Palace confirmed that Prince Andrew will not be in attendance.

NATO was established in 1949 with 12 founding members and the U.K. is one of them, with London being the home of its first headquarters. NATO has become an alliance of 29 countries. At the heart of NATO is a collective defense that is set out in Article 5 of the North Atlantic Treaty, NATO’s founding Treaty.

The royal family faces a lot of controversy this year including Prince Philip’s car crash accident, Prince Harry and Meghan Markle’s endless criticism, prorogation of parliament and Prince Andrew’s Epstein scandal. However, according to Richard Fitzwilliams, the Duke and Duchess of Cambridge have an extremely good year. In fact, he considered them the Queen’s saving grace.

“It should be noted that it was an extremely good year for the Duke and Duchess of Cambridge. Those looking to the future of the monarchy will see their charitable work and trip to Pakistan as impeccable,” Fitzwilliams said.

The royal correspondent praised Prince William for superbly handling sensitive issues during his visit to Israel. Meanwhile, Lorraine Kelly considered his wife, Middleton, the Queen’s top asset in the royal family.

Kate Middleton, Queen Elizabeth II and Prince William
Kate Middleton, Queen Elizabeth II and Prince William watch part of a children's sports event while visiting Vernon Park during a Diamond Jubilee visit to Nottingham on June 13, 2012 in Nottingham, England. Getty Images/Phil Noble