As Boris Johnson prepares to stand down as UK Prime Minister, the BBC’s Ritula Shah asks what his premiership has meant for Britain’s standing in the world. In just three years in office he was a key player in world events – Brexit, the COP 26 climate summit, the war in Ukraine. He championed an idea of ‘Global Britain’ – what did that mean and how will his colourful and controversial leadership be judged in countries around the world?