1. Introduction

On June 29, 2017, the OPCW released its report on Khan Sheikhoun chemical attack which confirms that Sarin gas was used on April 4, 2017. However, the OPCW didn’t assign responsibility, as investigations regarding the identity of the perpetrator became part of the mandate of the Joint Investigative Mechanism which was established in accordance with Security Council Resolution 2235 that was adopted on August 7, 2015.

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