G20 must forge agreement to increase tax on rich, say campaigners

Letter from almost 300 millionaires, economists and politicians says urgent action needed to prevent extreme wealth

Developed and emerging economies must use a summit this weekend to forge an international agreement to increase wealth taxes on the global rich, campaigners have said.

In an open letter to the G20 before its meeting in Delhi, the group of almost 300 millionaires, economists and politicians say urgent action is needed to prevent extreme wealth corroding our collective future".