most countries only have a 24mile zone before its open "international" area. so a 100km no-go zone is not gonna happen
i think you are picking a number based on the barrier between atmosphere vs space. rather than some military/maritime barrier of diplomacy and territory control
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if poland said it was 100km away from poland, russia could call it a message from poland declaring war on russia.. which would be a bad case to initiate
All that international law is exactly what Ruzzia violated. Do you fail to realize this is a proportional response to an act of war? Of course Ruzzia does not have to follow "instructions", the drones would be destroyed from Poland over Ukraine - so Ruzzia is effectively not attacked. Unless Ruzzia wants to claim sovereignty over any bit of airspace they occupy.
You do not attack Ruzzia - so no escalation, but you can perfectly agree with Ukraine to accept this and destroy drones over Ukraine, which cannot be classed as "escalation" as Ruzzia or Ruzzian assets are not destroyed.
You need some distance to intercept a drone, 100 km is good enough, but if you want 200 or 300. If Ruzzia decides to send a ballistic missile then 500 km I guess.
Again poland could if spotting a foreign drone within polish borders would have to surveil it and decide if its an actual viable threat, and then shoot it down. if not a threat or in international space or other things then poland can just watch and report and gather more evidence to strengthen viability for future incursions to be probable threats
Yes that is correct. They will assess the threat and based on previous experiences, anything getting 100 km from the border is a threat.