If you think European nations are having a hard time holding it together — strained by disputes over immigration, austerity and debt — spare a thought for the 10 countries that form the Association of Southeast Asian Nations.

True, compared with Europe, they face few fatally divisive problems. Most of Southeast Asia is contending with the impact of a slowing China and braced for the turbulence that could accompany the steady normalisation of US monetary policy. Yet there are no big financial transfers within Asean, a loose federation akin to the EU of the 1950s. No country is threatening to leave, nor are there fundamental differences over the direction of policy.

Still, as Asean prepares for an important milestone this month — the creation of a theoretically single market — it is worth reflecting on the incredible diversity of the “new bloc on the block”.