Syria threatens to retaliate after Israeli strike
31 January 2013 Last updated at 22:55 GMT
Syria has threatened to retaliate after Israeli warplanes reportedly crossed over its border and launched an attack close to the capital Damascus.
President Assad's government said the target was a military facility but other reports said the Israeli jets bombed a convoy carrying weapons to Lebanon.
The episode has heightened fears that Syria's civil war is destabilising the wider region.
The BBC's Middle East editor Jeremy Bowen reports.