agreement form exchang letter amend cooper agreement european econom commun yemen arab republ letter republ yemen brussel march sir refer consult held repres european commun republ yemen view adapt cooper agreement european econom commun yemen arab republ unif yemen arab republ peopl democrat republ yemen form republ yemen honour declar accord principl intern law provis cooper agreement appli territori republ yemen confirm european commun agreement extens accept sir assur highest consider behalf govern republ yemen abdulkarim al eryani letter european commun brussel march sir honour acknowledg receipt letter state refer consult held repres european commun republ yemen view adapt cooper agreement european econom commun yemen arab republ unif yemen arab republ peopl democrat republ yemen form republ yemen honour declar accord principl intern law provis cooper agreement appli territori republ yemen confirm european commun agreement extens honour confirm european commun agreement extens cooper agreement accept sir assur highest consider behalf council european union juppé marín