King Charles welcomed French President Emmanuel Macron to Britain on Tuesday for the first state visit by a European leader since Brexit, their warm greeting symbolising the return of closer ties between the two countries.

British cooperation on Tuesday at a royal banquet on held in honour of French President Emmanuel Macron's state-visit to the U.K. "France is one of our strongest allies as well as a country for which my wife and I have deep affection,

The French president and the PM are co-hosting the Franco-British Summit on the final day of Macron's state visit to the UK.

The two leaders are set to confirm details of a strengthened defense relationship at a summit Thursday. An agreement on tackling unauthorized migration may also be announced.

Britain and France will join together to use nuclear weapons against any “extreme threats” towards Europe, Sir Keir Starmer and Emmanuel Macron have declared. A newly-signed declaration by the leaders will state that the two countries’ nuclear deterrents are independent but can be co-ordinated in a joint attack on Europe’s enemies.