Deletion of 2018 Vienna embassy stabbing

Comment: as per  - investigation is just getting underway,  and .  As Users:Acebulf &Icewhiz suggest, merging to something like 2018 Vienna stabbing attacks makes sense, not least because the two are paired as part of the move by the present government of Austria to change its immigration/asylum laws in response to these two headline crimes
Stance: merge
Cited policy: Wikipedia:Notability (WP:RAPID||WP:NCRIME||WP:PRESERVE)