Yes. Neither Sweden nor Switzerland are members of any military alliance. The Swiss constitution bans the country from joining any military alliance.
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Switzerland is one.
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Eugen Egli has written:
'Soldatenleben' -- subject(s): Military life, Pictorial works,
Switzerland, Switzerland. Armee
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No
Switzerland is and has been since 1815 neutral. The Swiss
constitution bans it from becoming a member of any military
alliance. It is not, and does not want to be, a member of NATO.