The phrase "a broad dialogue" is correct and usable in written English.
It can be used to refer to an extensive or inclusive conversation or discussion on a particular topic.
Example: "The conference aimed to foster a broad dialogue among experts from various fields to address climate change."
Alternatives: "an extensive discussion" or "a wide-ranging conversation."
"A broad dialogue of what we're doing and why is a good thing for us as a nation.
But it never attempted a broad dialogue, despite an apparent effort by some Iranian officials to reach out after Iraqi leader Saddam Hussein was toppled in 2003.
The goal, they say, should be a broad dialogue under which, in a phased process, Iran would agree to confine itself to limited enrichment for a peaceful nuclear program under strict international monitoring as sanctions were progressively lifted.
The decision to allow buildings up to 50 meters tall (about 160 feet) "has been the subject of a broad dialogue with local residents," said Anne Hidalgo, a deputy mayor of Paris and a champion of the project.
But it suggested Iran was interested in a broad dialogue with the United States, with just about everything on the table, including full cooperation on nuclear programs, acceptance of Israel and the termination of Iranian support for Palestinian militant groups.
In a little noticed interview in 2012, Rouhani described how the U.N. nuclear chief, Mohamed ElBaradei, had rushed to Tehran after an autumn 2004 meeting with Bush to say the president was interested in a broad dialogue with Iran.
In negotiations over the nuclear programme, the Iranians have already indicated they seek a broader dialogue.
Pakistan, which certainly must do more to rein in extremists, wants a broader dialogue, with the priority being Kashmir's future.
Rattling off a long list of factors that made such an outcome difficult to achieve, he said he wanted to have a broader dialogue with the Congress on policy options.
But I guarantee you that what you see playing out in this series is playing out in every state in this nation, and there's a broader dialogue that needs to be happening".
He said that one advantage of a broader dialogue, as opposed to talking about individual cases like that of Mr. Zhao, was that it would encompass Chinese concerns about American criticism.
