The phrase "as a direct warning" is correct and usable in written English.
You can use it when indicating that a statement or action serves as a clear and explicit caution about a potential danger or issue.
Example: "The manager issued the new policy as a direct warning to employees about the consequences of tardiness."
Alternatives: "as a clear warning" or "as an explicit caution".
Obama administration officials appeared eager to use the killing of Mr. Godane as a direct warning to ISIS and its leader, Abu Bakr al-Baghdadi, and several officials pointedly echoed the president's words linking the strikes to how the United States planned to treat extremist groups in general.
Although he did not make an explicit threat, Obama's comments at the White House on Monday were widely seen as a direct warning to Assad that the U.S. would take military action if necessary to stop the use of chemical weapons.
According to White House sources, Marc Grossman, who replaced Richard Holbrooke as special envoy to Afghanistan and Pakistan, was given a direct warning by the president's opponents in Congress about trading Bowe for five Taliban prisoners during an election year.
Obama, in a direct warning to the senators and members of the House sitting in front of him, will say: "As long as I'm president, I will work with anyone in this chamber to build on this momentum.
In 2001, she fled to Austria after receiving a direct warning to leave Russia or else.
Schaefer had a more direct warning.
The warning will be seen as a direct response to the European Banking Authority, which argued earlier this week that the UK was dragging its feet preparing for Brexit.
When half of us become cool over a piece of technology as a direct result of seeing it demonstrated, that's surely a warning sign.
And researchers are already warning about the increase in armed conflict in Africa as a direct result of such food shortages.
As a direct consequence of the PCOD, Portugal has an operative national heat wave early warning system with the objective of reducing adverse health effects of future heat wave episodes.
The motion would act as a direct rebuttal of the Florida Family Association's plan to fly a banner above the resort warning "traditional" families that the "Gay Days" are approaching.
