They are extremely free-range but not wild animals, so the owner is supposed to have some general control of where they are going.
But anyway, this is not a problem for Sweden of Finland. It is resolved amicably if even noticed at all.
Russia is just their usual doing-whatever-they-want and saying-whatever-they-want. A few years ago, when some of their illegal fishing vessels were told to stop fishing illegally by the coastal guard, they made up some new and immediate laws to prohibit existing Norwegian ship trade. When some of the food we imported from them were found to be below safety standards and rejected, they suddenly found that all salmon they imported from Norway were extremely low quality and they demanded to pay less for it.
Petty bullshit. Diplomatically they are kids imitating the language of bigger kids.
Sweden should ‘accidentally’ torpedo one of their subs when it wanders into their waters, then send them a bill for the torpedo that ‘wandered into their hull’, should cancel out.
It not usually into the airspace. Just into the air defense zone which is over international waters. It’s the nation-state equivalent to “I’m not touching you.”