Ben Wallace met Estonian Minister of Defence Hanno Pevkur in London, where they agreed on a roadmap to see a more capable UK presence in Estonia, to deter Russian aggression and defend European and Nato security.
The UK's Defence Secretary said: "The deployment of assets such as Apache and Chinook helicopters to exercise in Estonia is a clear example of the strength of our relationship, and the importance we place on our ability to effectively operate side by side."
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The UK will also support the development of Estonia's warfighting division and provide a brigadier to lead the enhanced Forward Presence (eFP) Battlegroup from April 2023.
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This deployment will be enhanced with divisional-level assets such as short-range air defence and multiple rocket launch systems in the country.
These will be further augmented with periodic deployments of additional capabilities, beginning in January 2023, when Chinook helicopters will deploy.
A brigade-sized force will also be held at high readiness in the UK, ready to reinforce Estonia and the Baltics if needed.
These forces will regularly exercise in Estonia and the first exercise, Spring Storm, is planned for May 2023.
Estonia is supporting these plans by building four additional accommodation halls and other necessary support facilities at Tapa Camp.
Estonia and the UK are both part of the Joint Expeditionary Force (JEF), a group of 10, mostly Nordic countries, who work together to maintain the security of Northern Europe.