evidence: In the meeting, both sides agreed to speed up the finalisation of Vientiane’s Terms of Reference (ToR) in order to proceed with the delivery of a joint letter requesting the French government to supply maps and other related documents to settle a border dispute between the two countries. [...] Territorial disputes with Laos became a hot issue after Lao troops allegedly trespassed into the O’Alay and O’Tangav areas in Stung Treng province’s Siem Pang district, causing a standoff between the two countries. In September last year, both Hun Sen and Thongloun agreed to designate the O’Tangav area as a no man’s land and increase joint patrols of Cambodian and Lao troops there, following an August 2017 standoff.