Home2006 Treaties and Agreements ...Singapore (06-322) – Defense Agreement for Research and Development Concerning Combating Terrorism with Amendment hide Singapore (06-322) – Defense Agreement for Research and Development Concerning Combating Terrorism with Amendment TIAS Office of Treaty Affairs March 22, 2006 Defense: Combating Terrorism Agreement signed at Washington and Singapore March 14 and 22, 2006; entered into force March 22, 2006. With annex. Agreement amending the agreement. Signed at Singapore and Washington February 26 and March 21, 2016; entered into force March 21, 2016. Download attachment [2 MB] Tags International Law, Treaties, and Agreements Security and Defense Singapore