U.S. President Donald Trump told reporters in the Oval Office on the 29th (local time) that the United States and Iran are conducting negotiations via telephone. President Trump stated, "There's no need to fly for 18 hours just to see a document, like in the past; with one phone call, you can get an answer in 15 minutes," praising this method as very efficient, but added, "Personally, I prefer face-to-face communication." He explained that while negotiations between the two sides have made some progress, the crucial point is whether Iran's concessions meet U.S. demands. President Trump emphasized, "No agreement is possible unless Iran clearly promises to completely abandon nuclear weapons."