Key Officers

Senior Mission Staff, January 2021


Chargé d’Affaires
Marja Verloop

Agricultural Counselor
Christopher Riker

Chief, Office of Defense Cooperation
Colonel David Nyikos

Defense Attaché
Captain Mark Imblum

Information Management Officer
Donna Wieder

Legal Counselor
Paul Dean

Management Counselor
John Watson

Political and Economic Counselor
Steven Butler

Public Affairs Counselor
Ryan Roberts

Regional Security Officer
Shannon Conrad

United States Consulate General, Amsterdam
Consul General
Jennifer DeWitt Walsh

United States Permanent Representative to the Organization for the Prohibition of Chemical Weapons (OPCW)
Ambassador
Joseph Manso