Cambodia's two main political parties have announced a power-sharing deal, ending an 11-month political deadlock that has paralysed the country.
Hun Sen has been Cambodia's prime minister since 1985
The ruling Cambodian People's Party and the royalist Funcinpec party said they had agreed to form a government.
Cambodia has been run by a caretaker government led by the CPP's Hun Sen since inconclusive elections last year.
The CPP won 73 of the 123 seats in the National Assembly, but needed a two-thirds majority to govern alone.
Funcinpec and another opposition party, the Sam Rainsy Party, boycotted the opening session of parliament, saying the elections were biased towards the CPP.
Funcinpec won 26 seats and the Sam Rainsy Party won 24.
The agreement was announced in a joint statement by Hun Sen and Funcinpec leader Prince Norodom Ranariddh.
Under the deal, the CPP will hold 60% of the cabinet portfolios, while Funcinpec will get the rest.