The G-20 in Buenos Aires on November 30 could set the world on fire – perhaps literally. Let's start with the US-China trade war. Washington won't even start discussing trade with China at the G-20 unless Beijing comes up with a quite detailed list of potential concessions.

The word from Chinese negotiators is not at all bleak. Some sort of agreement could be reached on about a third of US demands. Debate on another third could ensue. But the last third is absolutely off-limits – due to Chinese national security imperatives, such as refusing to allow the opening of the domestic cloud computing market to foreign competition.

Beijing has appointed Vice-Premier Liu He and Vice-President Wang Qishan to supervise all negotiations with Washington. They face an uphill task: to pierce through President Donald Trump's limited attention span.