The world mourns Poland's loss.

Bóg Błogosławię was wszystkich

a very sad accident caused by the aircrew not wanting to lose face, at a guess. they were told not to land but went ahead and tried anyway. polish military or government aircraft, not civilian. a massive loss to the polish nation.

very sad for Poland !!!! rip

sad accident Y_Y R.I.P

Is Russia involved in this aeroplane crash?

yes. the plane crashed on russian soil. end of russian involvement