Minister of State for External Affairs Kirti Vardhan Singh in a written response to a query in Rajya Sabha also said various issues relating to trans-border rivers are discussed with China under the ambit of an “institutionalised Expert Level Mechanism,” which was established in 2006, as well as through diplomatic channels. Minister of State for External Affairs Kirti Vardhan Singh in a written response to a query in Rajya Sabha also said various issues relating to trans-border rivers are discussed with China under the ambit of an “institutionalised Expert Level Mechanism,” which was established in 2006, as well as through diplomatic channels.