The Brics economic alliance – formed by China, India, Russia, Brazil and South Africa – is considering an expansion, with more than 20 countries including Saudi Arabia and Iran having formally applied to join the bloc. Brics countries already make up more than 40% of the world’s population and almost a third of the world’s GDP.

WSJ’s Alexandra Wexler analyzes the membership frenzy and whether an enlargement can ultimately threaten the powerful G7.

0:00 Brics vs. G7
0:49 What’s at stake?
2:12 Why Brics wants to expand
3:11 Strongest candidates to join

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