US President Barack Obama arrived in Britain on Thursday, where he is set to wade into the poisonous Brexit debate and have lunch with Queen Elizabeth II. Air Force One touched down at London Stansted Airport, northeast of the British capital, at around 9:45 pm (2045 GMT), beginning what is Obama's fifth and likely final presidential visit to the kingdom. The president, along with First Lady Michelle Obama, will pay tribute to the queen, who turned 90 on Thursday, when they meet at Windsor Castle, west of London.
