Home2008 Treaties and Agreements ...Mongolia (08-917.1) – Millennium Challenge Compact hide Mongolia (08-917.1) – Millennium Challenge Compact TIAS Office of Treaty Affairs September 17, 2008 Foreign Assistance Signed at Washington October 22, 2007; entered into force September 17, 2008. With annexes. Agreement amending the agreement of October 22, 2007. Signed January 21 and 22, 2010; entered into force May 11, 2010. With annexes. Download attachment [4 MB] Tags Foreign Assistance Mongolia Treaties