An unmistakable pattern has emerged in the US’ strategy to contain China. Washington has sought to deny China access to frontier technologies and key commodities, and to redirect related supply chains to revitalise American industries. In this context, US President Donald Trump’s intense interest in America taking over Denmark’s Greenland becomes clear. Deny the Chinese their favourite seafood, which many can’t live without, and revive the US food industry. You think I am pulling your leg. This...