Quakes in the region have a habit of cascading westward along other faults, IIRC. This is not really over.
Yes.
A glimpse of doom: Istanbul’s earthquakes in history
https://www.echoturkey.com/op-ed/a-glimpse-of-doom-istanbuls-earthquakes-in-history/
Turkey’s earthquake is a warning for Istanbul, which would face even more deaths from a quake
https://www.cbc.ca/news/world/turkey-death-toll-building-structures-1.6741119