The travel of yataghan to the east and back to Balkans is the most prominent hypothesis. 
Hundreds of years after Alexander there was an 
Indo-Greek Kingdom in northwest and northern Indian subcontinent  with Greek rulers and official language. I suppose that is an explanation about Kukris and Sossun Patas also.
I agree that we dont talk politics on this forum but this rule must be respected from all. So please do not provoke  

 I didnt wrote about nations, that more or less they are a "salade macedoine" in all area. I just criticized a theory that claims the impossible as TVV noticed, too, from his part of view.