This is the biggest international event we have hosted in decades,” a Whitehall source said. The event presents a huge logistical, diplomatic and security challenge, with practice runs taking place in the middle of the night. Invitations were sent over the weekend to the heads of state of nations with which the UK has diplomatic relations. For most countries, that means the head of state plus one guest. However, invites were not dispatched to the leaders of Russia – which is continuing its on...
