French President Emmanuel Macron was welcomed Tuesday in London by Britain's King Charles III for a three-day state visit in the first since 2008 by France's leader.

King Charles III will highlight the crucial bonds between the United Kingdom and France in the face of a “multitude of complex threats” as he welcomes President Emmanuel Macron for the first state visit by a European leader since Brexit.

When France’s President Emmanuel Macron greeted Kate Middleton on July 8, he politely kissed her on the hand. While gentlemanly, was this a break in royal protocol? In short, no—although the gesture is a rare one for the Princess of Wales to experience when meeting diplomats.