Slovenia is actively involved in addressing challenges to international peace and security within the UN, and is running for a non-permanent seat on the UN Security Council for the 2024–2025 period.

Slovenia held the Presidency of the Council of the EU in the second half of 2021, assuming this role for the second time in 13 years. The Slovenian Presidency was based on four priorities under the slogan "Together. Resilient. Europe." Working with the European institutions and the Member States, it has strengthened the EU’s resilience to various crises and helped countries with the post-pandemic recovery and digital transformation. It has also made important progress in improving working conditions, the security of European citizens and the process of enlargement to the Western Balkans.

On 29 March 2017, the Government of the United Kingdom of Great Britain and Northern Ireland (UK) began the process of leaving the European Union (EU). The UK and the EU negotiated the Agreement on the withdrawal of the United Kingdom of Great Britain and Northern Ireland from the European Union in October 2019. On 17 October 2019, the European Council endorsed the revised agreement. Following the general election in the UK in December 2019, the UK Parliament endorsed the agreement in January 2020. The European Parliament endorsed it on 29 January 2020.