Use:

In the late 1980s, CR was used in the townships in South Africa. It caused some fatalities, in particular among children. Republican groups in northern Ireland have alleged that British Army and Royal Ulster Constabulary units used CR gas against Republican prisoners.

Egypt:
More recently, during the protests against the military government in Egypt, Egyptian security forces have begun using CR gas in addition to the more commonly-used, less debilitating CS gas. One protester described the gas as making him feel "as if your eyes are about to fall out; then you have trouble breathing, and you lose your sight". Mohammed ElBaradei also confirmed via Twitter that "tear gas with [a] nerve agent" is being used in Tahrir Square.

Israel:
Israel Police forces spray CR gas at riot control situations. It is widely used at demonstrations within the Palestinian victims and at the Israeli West Bank barrier.

Philippines:
CR tear gas was used in suppression of the mutiny in Makati that was led by Sen. Antonio Trillanes. The tear gas was fired in the building and all the people in the building including reporters were affected.

Sri Lanka:
The LTTE, also known as Tamil Tigers of Sri Lanka, an insurgent group in Sri Lanka used CR gas against government forces that were on an offensive to flush and defeat these insurgents during September 2008. Its use hindered the army's progress but ultimately proved ineffective in preventing the army from overrunning LTTE positions. This is one of the first few cases of insurgents using CR gas as an insurgent weapon.

Vietnam:
It has been reported that thousands of tons of CR gas were used by the U.S. forces in Vietnam to bring Viet Cong into the open. It was also used by the North Vietnamese forces in some battles like Hue in 1968 or during the Easter Offensive in 1972.

CR tear gas was used at the G8 protests in Genoa, Italy and Quebec City, Canada during the FTAA anti-globalization demonstrations during the Quebec City Summit of the Americas.
The Canadian, Norwegian, and Australian Armies train their soldiers with CR gas in a manner similar to that of the USA, as it is a basic part of CBRN (Chemical, Biological, Radiological, Nuclear) training. Gas is released by burning tablets, usually in a building reserved for this purpose (a "gas hut"). In the training, the person enters the building unprotected, and must fit and clear the gas mask before leaving. Other drills such as drinking and under-mask decontamination are also practiced. Some Norwegian units are exposed to CR-gas while engaged in physical activity such as push-ups.
Because of its alleged carcinogenic properties, the United States does not utilize CR for riot control. The U.S. military classification for this chemical agent is combat class chemical weapon causing serious side-effects for humans.