War on

"War on..." is a phrase used to describe an effort for or against something.

Examples of "war on..." include:

• War on Cancer, combined effort to decrease cancer mortality through improved prevention, detection, and treatment
• War on Christmas, term in the US to describe perennial controversy occurring around Christmas
• War on Drugs, US term referring to efforts to curtail illegal drug trade
• War on Gangs, national movement in the US to reduce gang-related activity, gang violence, and gang drug involvement
• War on I-4, nickname for rivalry between Tampa Bay Storm and the Orlando Predators in the Arena Football League
• War on Poverty, unofficial name for legislation first introduced by United States President Lyndon B. Johnson during his State of the Union address on January 8, 1964.
• War on Terror, term describing an international military campaign that started after the 11 September 2001 terrorist attacks on the United States
• War on Women, expression in US politics used to describe certain Republican Party policies as a wide-scale effort to restrict women's rights, especially reproductive rights
• War on Want, an anti-poverty charity based in London.

A variation is "war against...".

Examples of "war against..." include:

• War against Emus