A Letter of Request (LOR) is a document submitted from a Partner Nation to the USG requesting permission to purchase a particular defense article and/or service. An authorized representative of a Partner Nation must submit LORs in writing via an email, memo, or signed meeting minutes to an authorized representative of the USG. The LOR must be considered complete and actionable per the electronic Security Assistance Management Manual (eSAMM) Chapter 5, C5.1.2 & C5.1.3).