 Complete the following phrase:  Relations between the two countries since the 1989 Sudanese coup have had their ups and downs. They reached a nadir in 1995, when elements of the Sudanese government were complicit in a plot by an Egyptian terrorist group, Gamaa Islamiyya, to assassinate Egypts president, Husni Mubarak, while he was en route from the Addis Ababa airport to an Organization of African Unity now African Union summit in Ethiopias capital. By the end of 1999, Egyptian anger toward Sudan had subsided, and President al-Bashir visited Egypt, where the two leaders agreed to normalize diplomatic relations. Al-Bashir returned to Cairo in 2002, at which time they expanded cooperation on a variety of practical issues. Mubarak repaid the visit by going to Khartoum the following year. In 2004 al-Bashir again went to Cairo, where the two leaders signed the Four Freedoms Agreement dealing with freedom of ownership, movement, residence, and work between the two countries. There has been cooperation on counterterrorism and development projects drawing water from the Nile, and the two governments agreed to establish a free-trade zone along the SudanEgypt border, where they would exchange commodities free of duty. Sudan has particularly appreciated Egyptian verbal and moral support for its policy in 