At 50, Botswana discovers diamonds are not forever

When David Magang opened Botswana's first domestic law firm shortly after independence in 1966, he and his country were starting from scratch.

Since then, both he and the former British protectorate, which celebrates its 50th birthday this week, have travelled a huge distance based largely on Botswana's vast diamond wealth. With those riches running low, the outlook is less rosy.