Cambodia wins its independence from France. Under King Sihanouk, it becomes the Kingdom of Cambodia.
Sihanouk abdicates to pursue a political career. His father becomes king and Sihanouk becomes prime minister.
Sihanouk abdicated in favour of his father and became prime minister
Sihanouk is elected as head of state after the death of his father
Sihanouk is deposed in a US-backed coup by General Lon Nol
The Khmer Rouge, led by Pol Pot, march into Phnom Penh, beginning a reign of terror that would leave up to two million people dead from starvation, overwork or execution.
Sihanouk is evacuated to Beijing on the eve of the invasion by Vietnamese forces that oust the Khmer Rouge.
Sihanouk becomes president
Hun Sen, a former Khmer Rouge cadre who defected, is appointed as prime minister of Cambodia's Vietnam-installed government.
Vietnamese troops withdraw under international pressure.
Paris peace agreement is signed, giving the UN authority to supervise a ceasefire and democratic elections.
Sihanouk makes a triumphant return to Cambodia after nearly 13 years in exile.
UN-sponsored elections are held and the royalist FUNCINPEC party
Sihanouk returns to the throne under a new constitution transforming the country into a constitutional monarchy, which allows for the king to reign but not rule.
The Khmer Rouge are outlawed.
5-6 of may Hun Sen ousts Ranariddh in a widely condemned move that leads to deadly factional street fighting.
Khmer Rouge leader Pol Pot dies.
Sihanouk promulgates a law creating a UN-backed tribunal to bring Khmer Rouge leaders to justice.
In a surprise announcement, Sihanouk abdicates, citing poor health and a wish to ensure a stable transition to a new monarch.
Sihanouk writes on his website that the cancer that began in his prostate has recurred in his stomach.
Sihanouk says on his website that he has been successfully treated for a third bout of cancer.
Sihanouk says he has lived too long and wishes to die.
During a ceremony to mark the 20th anniversary of his return from exile, Sihanouk vows not to leave Cambodia again despite his health problems.
Sihanouk heads back to Beijing for medical treatment.