The Libyan–Sudanese relations refers to the long historical relations between Libya and Sudan, both are Arab countries. Libya and Sudan share an isolated border along a corner of northwestern Sudan that neither government has ever fully controlled. This state of affairs left open the possibility for a variety of real and perceived activities in the region that caused Khartoum to suspect that Libya periodically acted against its interests. Conflict between Libya and Sudan has occurred intermittently since relations between the two countries began to deteriorate in 1972.