Upgrading its anti-money-laundering controls is the Canadian bank's top priority following historic failures that led to a $3.1 billion penalty and a U.S. asset cap.

Upgrading its anti-money-laundering controls is the Canadian bank's top priority following historic failures that led to a $3.1 billion penalty and a U.S. asset cap.

MELBOURNE/LONDON (Reuters) -As Rio Tinto searches for a new CEO, the miner will cast a wide net due to a very short list of possible internal candidates, sources said, in contrast…