Last weekend’s G7 summit of political leaders from the world’s largest democratic economies opened with a surprise, as the French host Emmanuel Macron invited Donald Trump for an impromptu tête-à-tête on a hotel terrace in Biarritz. Speaking in English, Macron laid out an ambitious agenda including crises in Libya, Syria, Ukraine, North Korea and Iran, the current malaise in the global economy, the need for greater gender equality, management of the digital economy and the challenge of addressing climate change.