Though Modern Syria gained its independence from France in 1946, it has lived through periods of political instability driven by the conflicting interests of these various groups. Since 1958-61 it united with Nasser's Egypt, but an army coup restored independence before the pan-Arab nationalist Baath (Renaissance) party took control in 1963.
The Baath government has seen authoritarian rule at home and a strong anti-Western policy abroad, particularly under President Hafez al-Assad from 1970 to 2000. In 1967 Syria lost the Golan Heights to Israel after the Arab defeat in the Six Day War. Civil war in neighbouring Lebanon in the 1970s allowed it to extend its political and military influence in that country.
Syria pulled its forces out of Lebanon in 2005, having come under intense international pressure to do so after the assassination of Lebanese former prime minister Rafik Hariri. A UN report implicated Syrian and pro-Syria Lebanese officials in the killing, although Damascus still denies any involvement.
The government deals harshly with domestic opposition. Tens of thousands are estimated to have been killed in the suppression of the 1982 uprising of the Muslim Brotherhood in Hama.
Following the death of Hafez al-Assad in 2000 Syria underwent a brief period of relaxation. Hundreds of political prisoners were released, but real political freedoms and a shake-up of the state-dominated economy never materialised.
In 2011-12 security forces used tanks, gunfire and mass arrests to try to crush anti-government street protests inspired by the Arab Spring in Tunisia, Egypt and Libya. These protests rapidly took on a more formal nature when the opposition began to organise political and military wings for a long uprising against the Baath government. As 2012 wore on, the stand-off escalated into civil war, with defections from the governing elite signalling the steady collapse of central authority.