Buckingham Palace have said their approach was to invite all foreign sovereigns and not to exclude anyone at the Jubilee lunch.
I understand the King of Bahrain has met the Queen and Prince Andrew here at Windsor Castle. The King of Swaziland apparently kept the Queen waiting. Not the done thing.
Twice baked souffle, line caught sea bass and Duchy of Cornwall veg on the menu for monarchs at sovereign dinner at Buckingham Palace
The Queen is holding a lunch for monarchs from around the world celebrating her Diamond Jubilee, but some of her guests are raising eyebrows
Queen Sophia of Spain will not be attending Friday's Diamond Jubilee lunch after being ordered by her government to reject the invite.