Complex sentence: By October, a pocket of Croatian-controlled territory formed around the town of Slunj south of Karlovac, on the boundary of the regions of Kordun and Lika, hampering direct communications between SAO Krajina-held areas in the two regions.
Split into simpler sentences: By October, a pocket of Croatian-controlled territory formed around the town of Slunj south of Karlovac, on the boundary of the regions of Kordun and Lika. It presented an obstacle to direct communications between SAO Krajina-held areas in the two regions.