(ANSA) - BELGRADE, JAN 19 - Serbian President Aleksandar Vucic accused unspecified "foreign instructors" of inspiring the protests of students and teachers, supported by the opposition, which have been going on for weeks in the country and which are starting to worry the leadership in Belgrade. "Foreign instructors are doing all this, we know who does all this and how they do it. They come from various Western countries, some even come from the East, to do dirty work for a network of Western agents," Vucic said in an interview late last night with private Happy TV. According to Vucic, there would be an attempt to implement a kind of 'colored revolution' in Serbia, with the goal by the oppositions to overthrow the current democratically elected leadership and come to power through street protests and without the obligatory passage of elections. (ANSA).