IFALPA Safety Bulletin - 16 March 2022
Safety Bulletin (22SAB07) by Int'l Federation of Air Line Pilots' Associations, "Flying Into and Over Conflict Zones" -- link:
22sab07-flying-into-and-over-conflict-zones.pdf
The bulletin notes the worrying occurence of "military and non-military projectiles crossing FIRs adjacent to Ukrainian airspace."
It also contains a link to IFALPA resources materially relevant to the subject matter area addressed in this bulletin.