China said that it would share year-round hydrological information of the upper Mekong with downstream countries during the recently concluded 3rd Lancang-Mekong Cooperation Leaders' Meeting held via video conference. Will this help assuage fears that China is using the control of water flow in the Mekong as a lever, literally, to exert greater influence on the CLMVT (Cambodia, Laos, Myanmar, Vietnam and Thailand) countries in ASEAN? Chinese academics Zhai Kun and Deng Han warn that China and Southeast Asian countries must be wary of external forces politicising matters in the Mekong region.