Ang's definition of corruption is the abuse of public power for private gain. Ang has developed a typology of four types of corruption, divided along two dimensions. He divides theft into petty theft and grand theft.
The political scientist Yuen Yuen Ang argues that different forms of government create different styles of corruption. The U.S. and China have more in common than we’d like to admit — but Russia is a different story, which could explain its willingness to invade Ukraine.