According to the ABA's Model Rules of Professional Conduct, your duty is to "maintain the confidentiality of your communications with your client".
The ABA Model Rules of Professional Conduct were embraced by the ABA House of Delegates in 1983. They fill in as models for the morals guidelines of generally wards. Prior to the selection of the Model Rules, the ABA model was the 1969 Model Code of Professional Responsibility.
The mandate system was a mechanism set up by the League of Nations after WW1, allowing the victorious powers to govern enemy colonies until the natives were fit to rule themselves. The colonies were called 'mandates', while the country ruling it was referred to as the 'mandatary'.