Originally Posted by comfyincouch

EU to Africa via IST, at least with all flights on TK, these days usually there is no transit security. But it does not seem to be a guarantee and even if there isn't they do seem to use selective screening for the transit passengers nevertheless.

Doing the reverse, Africa to EU via IST, so far I have always needed to go through transit security.

I could imagine USA to Asia via IST being similar to EU to Africa.