"pose a warning" is correct and usable in written English.
You can use it as a way to express caution about a certain idea, action, or situation. For example, "The teacher posed a warning to the students about taking the exam too lightly."
Farage said the presence of Romanians in Britain posed a threat, warning of an explosion in organised crime.
The Washington, D.C., U.S. Attorney's office, in a statement, cited an exception: it was allowed to not to tell if giving such a warning "would pose a substantial threat to the integrity of the investigation".
According to the National Coalition Against Censorship, while over 60% of college instructors think that trigger warnings "pose a threat to academic freedom", only 7.5% of them say that students have tried to require the practice on their campus and 15% had students request warnings in their courses.
Respected social scientists have argued that trigger warnings pose a serious problem with modern academic culture by impeding students' growth and exaggerating their sensitivities.
While this resolves our current conceptual problem, it poses an important warning for the blind use of this technique, especially if used to detect genes.
A group of Tory grandees and former senior diplomats will tomorrow launch a devastating attack on David Cameron's flagship Eurosceptic policies, warning that they pose a threat to British influence in the European Union.
The warning poses a dilemma for the Bush Administration.
The Wikimedia Foundation, the not-for-profit organization behind Wikipedia, strongly condemned the rtbf ruling back in August, warning it poses a threat to its mission of providing 'free access to the sum of all human knowledge'.
The background to Rep. Smith's demand is that UCS has been uncovering evidence that scientists at ExxonMobil had informed company executives decades ago that the combustion of fossil fuels was contributing to global warning and posed a significant danger.
China has ordered US oil company ConocoPhillips to halt drilling at two leaking oil platforms in the Bohai Sea, with a warning that further spills posed "a huge threat to the oceanic ecological environment".
