This particular article says nothing about an "international air corridor". You owe him an apology for accusing him of not reading the article when you clearly did not read it yourself.
Thanks, tzs. So what if it's an international treaty, would you expect terrorists (possibly, wanting to boast of their hardware superiority) to honor it? There's always a risk in everything, but there are some known risks that we should never take. Qantas, Korean and US airliners were already avoiding Ukraine airspace altogether even without an ICAO ban. Sorry if the post hurt your feelings, no malice intended.
