Singapore to further boost money laundering controls amid 1MDB probe

I wonder what can the banks really do? They must have a lot of transactions happening every day. Can they really know who are money laundering?

http://www.channelnewsasia.com/news/singapore/singapore-to-further/2984852.html?sc_customer=10b49691-b4ce-46cc-9e58-1e4cec0f9b99&sc_src=email&sc_llid=6191&sc_lid=43987589&sc_uid=22K6jmHe3A