The phrase "announce a declaration" is correct and usable in written English.
It can be used when formally stating or making known an official statement or decision.
Example: "The president will announce a declaration regarding the new policy during the press conference."
Alternatives: "issue a declaration" or "proclaim a declaration."
In May 2016 the government – pathetically – announced a declaration of emergency across all Madre de Dios because of mercury contamination.
This is what happened when the site announced a declaration of war on spam in October last year: Sophos also say the iTunes 10 update fixes 13 "separate vulnerabilities" in the components used to render the iTunes interface.
More than 50 years ago, when Ho Chi Minh announced a declaration of independence for Vietnam -- a move intended to discourage the French from reclaiming its colony after World War II -- he, too, tried to impress the Americans.
In contrast last week, Thomas de Maizière, as Mrs. Merkel's chief of staff (and now interior minister), announced a "declaration of war" on the U.S.-run ratings agencies as if, for all their imperfections, they were the big culprit in the shambles of the German banking sector.
This shift comes after Iran's "anger" at Syria because it attended the Annapolis Conference, while leaders of Palestinian organizations in Damascus did not accept an official Iranian invitation to meet with President Mahmoud Ahmadinejad in Tehran, to coincide with the Annapolis Conference, and announce a counter-declaration, with the attendance of 10 Palestinian organizations.
The military announced a "constitutional declaration" on 16 June that gave it legislative powers in the absence of parliament and stripped Morsi of much of his presidential authority.
Fukushima's governor has just announced a historic declaration vowing to power his prefecture with renewables rather than nuclear power.
It has announced a formal declaration of war on the South, and pledged to reopen a mothballed nuclear reactor in defiance of UN Security Council resolutions.
The curfew that had been announced in a declaration of emergency that was imposed across the country for 30 days will now be imposed from 9pm to 6am.
He announced a seven-point declaration calling the killing of any person un-Islamic, whatever their faith, and condemning extremists' "deviation" from the teachings of Prophet Muhammad and the Koran.
