From the horses mouth:
Mr Staley said that the bank's decision on Africa, where it has had a presence for over a hundred years, had been "very difficult".
"The reality is, in this new regulatory environment, we carry 100% of the liabilities but we only own 62% of Barclays Africa.
"It truncated possible returns from investing in Africa."
Barclays has more than 12 million customers across 12 nations in Africa.
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BBC