Because they don't operate SSKs any more, same reason it isn't the sneaky UK. Both of whom are accused of operating in Russian waters, but those decisions are m

Because they don't operate SSKs any more, same reason it isn't the sneaky UK. Both of whom are accused of operating in Russian waters, but those decisions are made at the very top of the political hierarchy on a per-mission basis. Doing so inside Swedish waters is incredibly unlikely due to the massive political fallout for negligible reward. Edit to add: SSK due to the size and operating on the bottom. "Small U boats" are SSKs (diesel electric) not SSNs, as the nuclear power plant is massive.