We are living in an increasingly divided world. It took two decades to get to the Paris Agreement, and then global cooperation really lasted only for a decade. One key reason for this fragmentation is US President Donald Trump, who has taken an axe to the rules-based international order that America helped build. This week on Zero, Gordon LaForge, senior policy analyst at think tank New America, tells Akshat Rathi what comes next, and how progress can still be made on climate.