Uh no, our current administration has done nothing to reverse it nor has it been proactive in dealing with it, the ramifications with letting it fester are graver than you would imagine. So CURRENTLY there are no concerted efforts to stem terrorism in the Balkans.
The Balkan mess is complex and for you to simply blame it on the efforts of the previous administration is simple minded.
For you to blithely pretend that after all our efforts in the Balkans--which, if you kinda sorta look up the facts, DID happen under another administration--that we can just start a new front there, you're proving to be just another armchair general who bitches about how the actual people doing the fighting aren't doing the job properly.
That you had to go to the Balkans to "prove" your point is hilarious--we have people in dozens of countries pursuing the terrorists. As I pointed out, you're a literalist who's peeved because not every terrorist has his own personal Marine after him. Thanks for continuing to make my point! LOL
A quick perusal of your posts shows you're a Balkans obsessive, which makes everything a lot clearer now. It's thrown off your thinking.