Sweden and Finland have overcome Turkish objections to their joining NATO. Both countries have long been neutral, and so are giving up their long-standing neutrality to join NATO.
Sweden is an interesting case. Sweden rose to power in the Thirty Years War under King Gustavus Adolphus. By the end of the war, Sweden was the dominant Baltic power and effective hegemon over northern Europe. Sweden went on to expand its rule over what is now large parts of Finland, Poland, Belarus, Latvia, Estonia, Lithuania, Ukraine, and Russia. Sweden began its decline with a defeat at Poltava in Ukraine to Peter the Great in 1709 as part of the Great Northern War. This battle made Russia the dominant power in eastern Europe. The later peace treaty recognized Russian control over the Baltic states and southern Finland. Russia would take the rest of Finland during the Napoleonic era.
Sweden, having finally lost its empire, became a neutral country and avoided involvement in both world wars and the Cold War.
Finland was controlled by Sweden for centuries before it was conquered by Russia in 1809. The Tsars gave Finland a somewhat separate status as the Grand Duchy of Finland and it was governed differently. After the Russian revolution, it became independent for the first time. It fought against both Germany and Russia in the WW2 era and was able to maintain independence. It adopted neutrality during the Cold War.
So it is an interesting question why they would give up their independence at this time. Neither country is afraid of a Russian invasion. Both must be well aware of the reality of the weakness of NATO.
However, both have become tied into globalist interests and many of their leaders have been involved in the World Economic Forum. In short, both countries appear to be led by leaders that actually care more about the global elites than their own people and country. As such, both are being betrayed by their own leaders. Both countries will likely regret this choice.
Both countries are EU members, so this is likely also a direct result of giving up their national sovereignty to the EU.