The organisers of the World Economic Forum like people to get along. The forum specialises in getting rivals and enemies to share platforms in Davos: Palestinians and Israelis, Indians and Pakistanis, Americans and Iranians.

But this week, the Davos consensus broke down in spectacular fashion. Recep Tayip Erdogan, the Turkish prime minister, stormed out of a session with Shimon Peres, the Israeli president. Angered both by events in Gaza – and by what he saw as unfair handling of the discussion he was taking part in – Mr Erdogan vowed never to return to the forum.