Welcome back to SI Risk's weekly roundup, this week with Nathan Monshin and Dan Ridler. We'll round up some news from Syria, Turkey, the US, US-Saudi relations and the unrest in Sri Lanka. We appreciate all the support, feedback and comments. If there's something you'd like the SI Risk team to cover in more depth then tweet us @SI_Risk or get in touch via the usual channels. We'll be back next Friday, in the meantime, sign up for the email at the website. Have a great weekend!