As I laid out in my statement, there has been clear evidence of a continuing use of chemical weapons by the Assad regime in Syria. We saw what had happened in Douma. We gave time to make the appropriate assessments of what had happened in Douma and to make the proper planning for strikes. We took those strikes in a timely fashion to ensure that they were effective and had an impact on the chemical weapons capability of the Syrian regime. That was the basis on which we took the decision we took. It was clear from the behaviour we have seen from the Syrian regime that it would be prepared to continue to use chemical weapons, with the danger to civilians that we had already seen in Douma and elsewhere, and we were seeking to prevent humanitarian suffering for the future. That was the basis on which we took that action.