Subject search terms to try in SOLO include:
Diplomacy
International relations -- Decision making
Pacific settlement of international disputes
On aspects of the role & function of diplomats:
Diplomatic and consular service
Diplomatic protection
Consular law
Diplomatic and consular service -- Law and legislation
Diplomatic privileges and immunities
For diplomacy/international relations below nation state level try
Subnational governments -- Foreign relations
Municipal government -- International cooperation
Diplomats -- Protection
Diplomatic and consular service -- Security measures
Embassy buildings -- Security measures
For general guidance on using SOLO, please consult the guide below
Diplomatic Security by 
Satow's diplomatic practice by Open Access resources available to all with access to the internet
Political Settlements and Development by The current collection of books in the Bodleian Law Library with shelf marks beginning Internat are on Level 3, one floor above the entrance level to the library. It can be accessed by either a lift or stairs. There is seating and a PCAS machine on Level 3 - but readers are welcome to take books from this floor to another level of the Law Library if they prefer.
Diplomatic Law : commentary on the Vienna Convention on Diplomatic Relations by 
Diplomatic Law in a New Millennium by 
The Cambridge Handbook of Immunities and International Law by The Social Science Library (the Law Bod's near neighbour) is the principal Bodleian library for the politics and international relations.
Its collection is all on the ground floor of the Manor Road Building OX1 3UQ
The Oxford Handbook of Modern Diplomacy by If the Bodleian Libraries don't have the book you are looking for, we may be able to source it through Oxford's inter-library request service.
There are a number of reasons why the Bodleian Libraries may be unable to provide electronic access to a resource. The ebooks guide explains some of these reasons:
If the Bodleian Libraries don't have the print or ebook you are looking for, you can make a recommendation by completing the form below (Oxford Single-Sign On required).