Assad crosses Washington's red line again

The US launched airstrikes on Syria this week, sparking a wide range of reactions from the international community. The US-led airstrikes targeted a factory believed to be the source of a Syrian-regime chemical weapons attack last week, which killed dozens. Chemical weapons experts have been blocked from the Syrian attack site by regime forces, reinforcing claims that longstanding President Bashar Al Assad was responsible. But, with so many powers involved in the country, the question of who was involved remains. But it's just one of many questions swirling around the conflict. In this week's Beyond the Headlines, we assess the situation in Syria. Our guest is Lina Sinjab, the BBC’s Middle East Correspondent. She has spent several years covering the region and provided numerous insights into the Syrian war since it began in 2011.