Sir Keir Starmer was seen grinning and laughing as he welcomed European leaders to Blenheim Palace on Thursday. The Prime Minister was hosting leaders from across Europe at the European Political Community summit at the Oxfordshire residence. Prime Minister Sir Keir Starmer said: “We cannot let the challenges of the recent past define our relationships of the future. “That is why European security will be at the forefront of this Government’s foreign and defence priorities, and why I am focused on seizing this moment to renew our relationship with Europe. “The EPC will fire the starting gun on…