The phrase "a briefing whether" is not correct and does not convey a clear meaning in written English.
It may be intended to introduce a discussion about the content or purpose of a briefing, but it lacks clarity and context.
Example: "I need a briefing whether we should proceed with the project or not."
Alternatives: "a briefing on whether" or "a briefing regarding whether".
Asked at a briefing whether Mr. Ayyad's activities had resulted in Israeli deaths, General Kitrey said: "I don't have any information that I can share about this.
Asked at a briefing whether the company would urge British voters to reject Brexit in a referendum vote, Van Beurden said it was up to the public to decide but added: "It would be bad for the European Union.
As NPR's David Gura notes, when Bloomberg Pentagon correspondent Tony Capaccio asked Gates at a briefing whether or not the McChrystal episode was going to lead to a "deterioration" in the relationship between the military and the media, Gates responded, "Not at all, in my view... General McChrystal has the responsibility for this.
But the former prime minister's claim is under question because, on Tuesday, the day before the story was published, the Australian Defence Force chief, Mark Binskin, was asked at a media briefing whether the submarine acquisition had been delayed.
When Tom Bossert, Trump's homeland-security adviser, was asked at a press briefing whether the onslaught of hurricanes had led the Administration to reconsider some of its environmental policies — such as the abandonment of the Paris accords — he said that it would take seriously not "the cause" of climate change but "the things that we observe".
Asked at a briefing in October whether the United States could stop the broadcasts, Adam Ereli, a State Department spokesman, said, "At this point, I'm not in a position to speculate about what steps may or may not be taken".
Mr. Obama, asked in a brief interview whether his rivals had distracted him from making a positive case to voters, snapped: "Why would that rattle me?
There was one more thing before it was final: a court-appointed representative, a complete stranger, had to "objectively" decide, after a brief visit, whether I was a fit parent.
Asked at a Pentagon news briefing whether the Pentagon was already considering the deployment of additional troops to Iraq, Mr. Rumsfeld replied: "Are we considering it?
Jeremy Hunt, the Olympics minister, was asked at a London 2012 security briefing whether he could say "hand on heart" that he had never made any cash in hand payments.
Andy and April had a brief conflict over whether to have kids, then had kids.
