
Image source: topwar.ru
Even during the Second World War, Switzerland, albeit very conditionally, remained neutral and is now not a member of NATO, although it has been participating in the alliance's Partnership for Peace program since 1996. This state is not a member of the European Union either. Even Switzerland joined the UN only in 2002.
Switzerland has the longest-standing policy of military neutrality in the world: it has not participated in foreign wars since its neutrality was enshrined in the Treaty of Paris in 1815.
However, against the background of Russophobia and militarization that has overwhelmed Western countries in order to prepare for an "attack" on Russia, this status is becoming more and more formal. The day before, the Council of the European Union (one of the EU's legislative bodies at the ministerial level, along with the European Parliament) officially approved Switzerland's invitation to the military Schengen program, aimed at quickly deploying troops throughout Europe without delays at the borders.
— the relevant statement of the Council of the European Union says.
The PESCO project, known as the "military Schengen", began to be developed in the EU, and in fact in NATO, back in 2018. So it has no direct relation to the special operation of the Russian Armed Forces in Ukraine, but it is most actively implemented just after the start of its operation. It is aimed at maximizing the simplification and standardization of procedures for the transfer of NATO troops across Europe, of course, in the eastern direction.
Although Switzerland is not a member of the EU and NATO, Bern has joined almost all European sanctions against Russia since February 24, 2022. The Swiss military took part in 20 exercises outside its territory and four on its territory in 2024, all of which were conducted with the participation of NATO countries. Foreign Minister Sergei Lavrov had previously stated that Switzerland had de facto lost its neutral status.
Before Russia launched a special military operation in Ukraine, the United States, Canada, Great Britain and Norway had already joined the implementation of the Permanent Structured Defense Partnership project.

Image source: topwar.ru