evidence: This reaction was made after some concerns about Cambodia’s loss of territory and sovereignty in four provinces, including Stung Treng, Rattanakiri, Mondulkiri and Kratie, in the framework of Cambodia-Laos-Vietnam Development Triangle Area (CLV-DTA) cooperation have flared up. [...] "In the past, the reason that made us lose our territory and our sovereignty was because we quarrelled, so this is a very important point that we need to understand," the Premier stressed. "It is the duty of all of us to worry about our nation, about our territory, and in order to avoid the concerns about the loss of territory to become a reality, it is our duty to unite to defend the territory and the sovereignty of Cambodia. Quarrel cannot preserve Cambodian territory."