declare war against

declare war against (someone or something)

1. To vow to fight against an enemy country or group in a literal war. We will have to declare war against the rebels if they advance over our border.
2. To voice opposition to someone or something without physical fighting. The mayor has declared war on crime in our city and is bolstering our police force.
See also: declare, war

declare war against someone or something

 and declare war on someone or something 
1. Lit. to formally announce that one will fight a war with someone or some country. A group of countries declared war against the aggressor.
2. . Fig. to announce a serious campaign against a type of person or a serious problem. The president declared war against crime and criminals. The pressure group declared war on waste.
See also: declare, war
References in classic literature ?
No international difficulty ever arise to enable us to declare war against some transatlantic power?
Nor did he know how even to the last John Carter, Warlord of Mars, had refused to permit the jeddak of Helium to declare war against either Ptarth or Kaol, because of his implicit belief in his son, and that eventually all would be satisfactorily explained.
The queen pressed her brother and the Emperor of Austria to appear to be wounded, as they really were, by the policy of Richelieu--the eternal object of which was the abasement of the house of Austria--to declare war against France, and as a condition of peace, to insist upon the dismissal of the cardinal; but as to love, there was not a single word about it in all the letter.
Roosevelt, British Prime Minister Winston Churchill and Soviet leader Josef Stalin signed the Yalta Agreement, in which Stalin agreed to declare war against Imperial Japan following Nazi Germany's capitulation (in return, the Soviet Union would acquire territories lost to Japan in the Russo-Japanese War).
Philip Aguer stressed that his country takes statements of Sudanese officials seriously, saying the Sudanese government sought to declare war against his country since long time ago.
Senator Rand Paul, a Republican from Kentucky, has introduced a measure to declare war against ISIS since President Barack Obama has no authority to launch a war against the group.
Soon after the attack, British commanders-in-chief all over the world received a secret telegram from England's war office, explaining that every precaution should be taken in case the French declare war against Britain.
According to a report that appeared in the Sabah daily on Thursday, Fidan also filed a complaint against the lawyer, accusing him of warmongering, citing Article 304 of the Turkish Penal Code (TCK), which criminalizes "provoking foreign officials to declare war against the Republic of Turkey or insult it," as a basis for his complaint.
Why did the United States declare war against Great Britain in 1812?
Hays also looks at the horrendous weather conditions experienced in the North Pacific and describes the experiences of American airmen captured by the Japanese or interned by the Soviet Union (which did not declare war against Japan until August 1945).
He also clarified that he did not aim to declare war against America, but America should not be allowed to interfere in the internal issues of the country.
And yet Tony Blair, somehow, was able to declare war against Iraq, send our young men and women to a war where many were killed and thousands more prevented from seeing their children growing up without consulting us, 'The People,' or even his own members parliament .
It's time to declare war against anyone who tries to conspire against us.
Remember, we didn't declare war against Japan until it had attacked Pearl Harbor or against Germany until Hitler had declared war against us.