declare war on (someone or something)

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declare war on (someone or something)

1. To officially announce the intention to fight against an enemy country or group in a war. We will have to declare war on the rebels if they advance over our border.
2. To announce the intention to vehemently oppose someone or something. This usage does not refer to physical fighting. The mayor has declared war on crime in our city and is bolstering our police force.
See also: declare, on, war

declare war on

Also, declare war against. Announce one's intent to suppress or eradicate something or someone. For example, The police have declared war on drug dealing in the neighborhood, or Several gangs have declared war against each other. This usage transfers the literal sense of the term, "to state formally one's intention to carry on hostilities against another power," to a somewhat smaller scale.
See also: declare, on, war
References in periodicals archive ?
And I am declaring war and I said I will kill anybody who stands in the way,' he said.
This is called declaring war. Therefore, as the Constitution grants "all legislative power" to Congress, a declaration of war, which has the effect of changing the legal position of a country in relation to another, may only be made by Congress!
ISLAMABAD -- Ameer, Jamaat e Islami, Pakistan, Senator Sirajul Haq, has said that Prime Minister Nawaz Sharif was facing divine wrath for declaring war against Allah and His Prophet on the issue of interest and he would be packing up very soon.
Britain and France declared war on Germany and fortunately for us Hitler made one of his worst mistakes by declaring war on the US.
In retrospect, Hitler committed a huge blunder in declaring war on America.
August 4: Germany invades Belgium and Britain protests at the violation of Belgian neutrality before declaring war on Germany.
Today is the centenary of Britain declaring war on Germany a week on from the start of the war which in its early days saw Austria-Hungary declaring war on Serbia with German support and Germany declaring war on Russia, invading Luxembourg, declaring war on France and invading Belgium.
On August 4, 1914 the chilling announcement that Britain was declaring war on Germany came after requests to leave neutral Belgium out of an escalating European conflict were ignored.
Onur Euymen, the former deputy chairman of the main opposition Republican People's Party (CHP), told Today's Zaman that Erdoy-an's remarks about declaring war on Syria do not comply with either national law or the principles of international law.
THE Cabinet Office has no record of a disputed telephone call in which Rupert Murdoch claims Gordon Brown said he was declaring war on the media mogul, it has emerged.
In the aftermath of the attacks which resulted in the death's of 3,000 innocent men, women, and children, the American government responded by declaring war on "terrorism."
There the king has only the power of declaring war, and the house of parliament, that of raising money for the support of it.
In examining debates over the role of declarations of war in recent conflicts involving the United States, Saikrishna Prakash has proposed that there are three different approaches for understanding what declarations of war entail in the US constitution: a categorical theory that states that the authority to declare war includes the power to control all decisions to enter war, a pragmatic theory that proposes that such power may be made unnecessary by an act of war in itself against the United States, and a formalist theory that holds that the power of declaring war constitutes only a formal implementation of executive power to conduct war.
It also describes how a measure declaring war or authorizing the use of force would be considered under the procedures contained in the War Powers Resolution of 1973.
THE Government was accused of "declaring war" on public services as the Chancellor unveiled billions of pounds worth of savings and a two year pay freeze for workers.