Factories have been shut down, and foreign buyers restricted.
Measures include checkpoints around the city and missiles by the Olympic stadium.
Athletes outside the most popular events – gymnastics, track and field, and swimming – win about one third of America’s Olympic medals.
Prime Minister Hun Sen, who has ruled for 23 years, won another five-year term Sunday. His party has overseen several prosperous years; critics say it stifles democracy.
Chinese officials say recent antipollution rules are helping. Critics question their data.
The largest online community in the world suffers under a heavy hand.
Even after the lifting of a decades-old ban on displays of Chinese culture, the ethnic Chinese minority struggles to integrate.
Four women wrestlers, who share 20 Olympic and World Championship gold medals among them, are changing gender perceptions in a traditionally male-dominated society.