UOB has agreed to pay about S$4.9 billion to buy consumer assets of Citigroup in Indonesia, Malaysia, Thailand and Vietnam. This is a deal that could see UOB almost double its retail customers to about 5.3 million. Andrea Choong, Equity Research Analyst, CGS-CIMB shares why UOB is confidently scaling up its business in 4 key regional markets at one go and what long-term potential they see in Southeast Asia.