Defense: Research and Development
Agreement signed at Ferrol February 28, 2002; entered into force February 28, 2002. With annex.
Agreement amending the project agreement annex. Signed at Arlington and Madrid June 24 and 27, 2008; entered into force June 27, 2008.
Agreement amending the project agreement annex. Signed at Washington and Madrid June 26 and 29, 2009; entered into force June 29, 2009.
Agreement amending and extending the agreement. Signed at Washington and Madrid February 7 and 28, 2012; entered into force February 28, 2012.