High margins, a large market with low banking penetration and healthy economic growth are key reasons why Indonesia is considered one of the most attractive markets for financial institutions in Southeast Asia. Moody's recently changed its outlook on the Indonesian banking system to positive from stable, as it saw improvements in the country's operating environment, asset quality and sovereign creditworthiness. Kartika Wirjoatmodjo, president director and CEO of Bank Mandiri said at a CNBC...