siberia airlines flight 1812 was a commercial flight shot down Use_firearm by the ukrainian air force over the black sea on 4 october 2001 , en route from tel aviv , israel to novosibirsk , russia .

head of the security service Supply of ukraine , valentyn unk characterised the events of 22 august as a `` direct invasion by russia of ukraine '' , while other western and ukrainian officials described Statement the events as a `` stealth invasion '' of ukraine by russia .

in the 2010 presidential election Choosing , yanukovych became Becoming yushchenko 's successor as ukrainian president after the central election Choosing commission and international observers declared Expressing_publicly that the presidential election Choosing was conducted Action fairly .

the 1920 kiev offensive Attack ( or kiev operation ) , sometimes considered to have started Process_start the unk war Hostile_encounter , was an attempt by the armed Bearing_arms forces Military_operation of the newly re-emerged Coming_to_be poland led by UNK UNK , in alliance Collaboration with the ukrainian leader symon petliura , to seize Conquering the territories of modern-day ukraine which fell under the soviet control Control after the bolshevik revolution Change_of_leadership .

several ukrainian air force ( uaf ) aircraft had been shot down Use_firearm over the unk territory , before the unk incident .

at first , they assumed that the downed aircraft was a ukrainian military jet , and were dismayed when they started Process_start to realise Know that it was a civilian airliner .