The phrase "an open clash" is correct and usable in written English.
It can be used to describe a situation where there is a visible and direct conflict or confrontation between parties.
Example: "The debate turned into an open clash between the two opposing sides, each presenting their arguments passionately."
Alternatives: "a direct confrontation" or "a public dispute".
It requires an open clash of ideas, which the people can decide.
During the session of the Central Committee in October 1967, an open clash occurred between Novotný and the Slovaks.
Many also wonder if the French president, François Hollande, really wants an open clash with his European colleagues as well as with his American counterpart, Barack Obama.France is not entirely alone.
On Saturday, there was an open clash between the Israeli envoy, Yitzhak Molho, and the Palestinian chief negotiator, Saeb Erekat, according to a Palestinian official who was not authorized to speak publicly about the issue.
1938 British Troops in Jerusalem Jerusalem — British troops with fixed bayonets and armed with a supply of hand grenades took over the policing of Jerusalem today [July 8] after another bomb outrage increased the tension between Arabs and Jews to the point of an open clash.
There is speculation in Germany that Berlin is determined to avoid an open clash with Paris.
The match was a repeat of the Australian Open clash in January, which Murray won in four tense sets as he went up against Berdych and former coach Dani Vallverdu.
A different sort of play fight was the open clash between Vince Cable, the business secretary, and James Brokenshire, the immigration minister, against the background of a row between the two parties about the publication of a report into the economic impact of immigration.
Business is advanced by stitch-ups between party barons, not the open clash of ideas.
The first open clash between the mutineers and officers came on the morning of 3 December, when a small group of sailors gathered on the forecastle and, refusing orders to leave, began to argue with the officers.
