Home2008 Treaties and Agreements ...Canada (08-721) – Memorandum of Understanding Concerning Combined Defense Information Systems Management in Support of Defense of North America hide Canada (08-721) – Memorandum of Understanding Concerning Combined Defense Information Systems Management in Support of Defense of North America TIAS Office of Treaty Affairs July 21, 2008 Defense: Communications Memorandum of understanding signed at Ottawa and Arlington June 25 and July 21, 2008; entered into force July 21, 2008. With annexes. Download attachment [1 MB] Tags Canada Defense Treaties