Relations between Goukouni and Gaddafi started deteriorating. Libyan troops were stationed in various points of northern and central Chad, in numbers that had reached about 14,000 troops by January–February 1981. These forces created considerable annoyance in the GUNT by supporting Acyl's faction in its disputes with the other militias, including the clashes held in late April with Goukouni's FAP. There were also attempts to Libyanize the local population, which made many conclude that "unification" for Libya meant Arabization and the imposition of Libyan political culture, in particular of "The Green Book".