It was a transatlantic trip with one notable absence. Prince Harry touched down in the UK this week without Meghan Markle or their children, Archie, five, and Lilibet, four — and according to sources close to the Duke, the family separation is not by choice.

Harry is described as making “frantic” efforts to arrange a reunion between King Charles and his Sussex grandchildren, a meeting that has so far been blocked not by bad blood alone but by the unresolved question of who pays for and coordinates security when the children are on British soil. That dispute, which has dragged through civil courts and public statements for the better part of three years, continues to sit at the center of nearly every Sussex-Palace negotiation.

The Montecito household — the $14.7 million Riven Rock estate the couple purchased in 2020 — is where Meghan and the children are waiting out the trip. Harry made a similar solo journey earlier this year when Charles was diagnosed with cancer, a visit that generated headlines and, by most accounts, a cordial if cautious reception at the Palace.

Whether this trip produces a different outcome depends largely on whether the two sides can reach a workable agreement on protection. Harry surrendered his publicly funded Metropolitan Police security detail when the couple stepped back from royal duties in 2020. His subsequent legal bid to have that coverage reinstated was rejected by the UK government. A private arrangement — the kind that would need to satisfy both Harry's team and the Palace — has not yet been confirmed.

Charles's own health timeline adds urgency to the calendar. No reunion date has been publicly announced.