Where can I get some help on the drafting of diplomatic notes? Can an exchange of diplomatic notes constitute an international agreement?

The State Department's Executive Secretariat Correspondence Office has a very helpful description of diplomatic notes, with examples of the different types of diplomatic notes. See http://ses.state.gov/execsecinfolink/readyreference.asp

In addition, the Office of Treaty Affairs is available to help draft or review exchanges of diplomatic notes.

An exchange of diplomatic notes may constitute an international agreement.

[This is a mobile copy of Diplomatic Notes]