By Reuters Staff 4 Min Read TRIPOLI (Reuters) - Libyans watching a peace process nearing a critical phase this week in Switzerland need only try driving from one side of their country to the other to understand the obstacles to diplomacy. A member of security forces stands behind a weapon, in Tripoli, Libya February 1, 2021. REUTERS/Ayman Al-Sahili An October ceasefire called for all foreign mercenaries to leave the country and for the main coastal road between west and east to reopen. But the mercenaries remain, the United Nations said last week, and the road is shut. For those who cannot take one of the flights that resumed last year between the capital Tripoli in the west and Benghazi in the east, it means a long, dangerous detour through the desert.