Sweden's navy has stepped up its hunt in the waters around Stockholm amid suspicions a Russian submarine may be in trouble there.
The military has asked civilian ships to evacuate one area of sea as it carries out its biggest deployment since operations to find Soviet submarines in the Cold War.
Maddy Savage, editor at The Local news website in Sweden, is in the area and says some Swedes there think Russia may be trying to put pressure on Sweden and that more attention should be paid to defence readiness.
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