```html Prime Minister Ulf Kristersson (M) will participate in the Joint Expeditionary Force (JEF) summit in Tallinn, Estonia, on December 16–17. The meeting gathers the leaders of the ten member countries in the UK-led defense cooperation to discuss support for Ukraine, the security situation in Northern Europe, and further strengthening the JEF cooperation.

The summit also marks JEF's 10th anniversary since the cooperation was founded in 2014. Estonia's Prime Minister Kristen Michal is hosting the meeting and describes it as an opportunity to enhance defense cooperation and reaffirm the countries' commitments to regional stability.

The Joint Expeditionary Force is a multilateral defense platform that includes the United Kingdom, Sweden, Finland, Denmark, Norway, Iceland, Estonia, Latvia, Lithuania, and the Netherlands. The focus is on joint exercises and operational capability to address crises, particularly in the Baltic Sea region.

The latest summit took place in Sweden in October 2023 and addressed, among other things, hybrid threats and defense material cooperation. This time, similar topics are expected to be on the agenda, with a particular emphasis on current security challenges in Europe, according to a press release from the Finnish presidential office.

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