for prime minister on 24 December 2021. In October 2022, Hun Sen warned CPP members that the country's newest and largest opposition party, the Candlelight Party, may be dissolved before the 2023 general election. The warning comes after a June 2022 lawsuit filed by the National Election Committee against the party's deputy president, Son Chhay, accusing him of defamation by speaking out against electoral fraud by the CPP. Geography Cambodia has an area of and lies entirely within the tropics, between latitudes 10° and 15°N, and longitudes 102° and 108°E. It borders Thailand to the north and west, Laos to the northeast, and Vietnam to the east and southeast. It has a coastline along the Gulf of Thailand. Cambodia's landscape is characterised by a low-lying central plain that is surrounded by uplands and low mountains and includes the Tonle Sap (Great Lake) and the upper reaches of the Mekong River delta. Extending outward from this central region are transitional plains, thinly forested and rising to elevations of about above sea level. To the north the Cambodian plain abuts a sandstone escarpment, which forms a southward-facing cliff stretching more than from west to east and rising abruptly above the plain to heights of . This cliff marks the southern limit of the Dângrêk Mountains. Flowing south through Cambodia's eastern regions is the Mekong River. East of the Mekong the transitional plains gradually merge with the eastern highlands, a region of forested mountains and high plateaus that extend into Laos and Vietnam. In southwestern Cambodia two distinct upland blocks, the Krâvanh Mountains and the Dâmrei Mountains, form another highland region that covers much of the land area between the Tonle Sap and the Gulf of Thailand. In this remote and largely uninhabited area, Phnom Aural, Cambodia's highest peak rises to an elevation of . The southern coastal region adjoining the Gulf of Thailand is a narrow lowland strip, heavily wooded and sparsely populated, which is isolated from the central plain by the southwestern highlands. The most distinctive geographical feature is the inundations of the Tonle Sap, measuring about during the dry season and expanding to about during the rainy season. This densely populated plain, which is devoted to wet rice cultivation, is the heartland of Cambodia. Much of this area has been designated as a biosphere reserve. Climate Cambodia's climate, like that of the rest of Southeast Asia, is dominated by monsoons,