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Timo S. Koster

Timo S. Koster

Former Ambassador-at-Large, Security Policy & Cyber, Ministry of Foreign Affairs of the Kingdom of the Netherlands

Timo S. Koster was Ambassador-at-large for Security Policy & Cyber at the Dutch Ministry of Foreign Affairs from 2018-2020. Prior to this, since 2012, he was Director for Defence Policy and Capabilities at NATO HQ in Brussels.

After finishing his law degree at the University of Amsterdam, Ambassador Koster joined the diplomatic academy of the Ministry of Foreign Affairs of the Netherlands in 1991. His first appointment was at the Royal Netherlands Embassy in Nairobi, Kenya. Back in The Hague from 1994, he served in several positions within the Ministry, including a stint as Private Secretary to the Minister for European Affairs, before moving to the Royal Netherlands Embassy in London, as Head of Economic Department, between 1998 and 2001.

In 2001, Ambassador Koster became Acting Director for European Integration at the Ministry of Economic Affairs, after which he served as a Project Director at the Ministry for Foreign Affairs. In 2003 Mr. Koster was appointed Deputy Ambassador at the Royal Netherlands Embassy in Athens, Greece. In 2008 he moved to Brussels where he served as Defence Advisor at the Netherlands Permanent Representation to NATO until 2012 when he moved to the position of Director Defence Policy & Capabilities in the NATO International Staff.

Ambassador Koster is affiliated to the Atlantic Council Washington DC as a non-resident Ambassadorial Fellow at the Brent Scowcroft Centre for International Strategy and Security.


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