Security around embassies is tightening.
Figures from the Federal Office of Police show a sharp rise in protective measures for foreign diplomatic missions: from 120 in 2015 to 580 last year.
Bern has a dense network of embassies and Geneva is home to numerous international organizations.
The Federal Police Office says each mission is assessed individually, but does not disclose details for security reasons.
Police say the war in Ukraine and the Middle East conflict are key drivers.
Embassies of Russia, Ukraine, Israel, Arab states and the US remain under the heaviest protection.
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