For residents of Syria's eastern Ghouta, five days of intense bombardment have imposed a new routine of terror in a district already tormented by years of siege.

Syria's civil war has long dictated the rhythms of daily life in eastern Ghouta, the largest area held by rebels near the capital Damascus, separating it from the outside world and limiting its access to fuel, electricity, food and medicines.

Since Sunday, heavy shelling, rocket fire and airstrikes have also pounded the enclave, a bombardment that Syria's government says is necessary to stop mortar attacks on Damascus.