Sweden’s state and society have made a sharp turn in their defense policy following Russia’s full-scale invasion of Ukraine. The Scandinavian country’s 200-year tradition of neutrality is now a thing of the past, and Sweden has begun to seriously focus on defense, recognizing that its weakest point is its largest island, Gotland.
It’s highest point is like 80m above sea level, melting all the ice on the planet would only raise sea levels by about 60m. So quite unlikely.