Sweden used to have their own uranium mine, but since it was cheaper to buy it than to mine it they shut it down.
Pretty sure most of it is purchased from Russia.
If you import 10 years of gas you import 10 years of gas.
If you import 10 years of uranium for the LWR you imported more like 1000 years of uranium for fast reactors.
Gas is difficult to ship long distances and dependent on pipeline networks. It is hard to substitute American or Middle Eastern gas for Russian gas but easy to replace Russian uranium with uranium from South Africa, Australia and many other places.