How much of Europe runs on Europe?

Europe buys much of its energy, its computer chips, its cloud storage and even its films from other countries. That works while relations are good. When they turn sour, the seller gets a say in what Europe can do.

This index measures how far Europe could manage on its own, across five areas. It is scored out of 100.

Each star on the flag is worth a twelfth of the score. Europe has lit just under six.