The phrase "a clash over a" is correct and usable in written English.
It can be used to describe a disagreement or conflict regarding a specific issue or topic.
Example: "The two countries experienced a clash over a territorial dispute that had been unresolved for decades."
Alternatives: "a conflict regarding a" or "a dispute over a".
A clash over a barricade in north Kosovo on Monday left dozens of Nato soldiers and Serb protesters injured.
And so it proved when oil executives faced the fury of a village hall full of West Sussex residents in a clash over a controversial technology that energy companies believe could open up major reserves of energy from underground rocks.
DealBook » In Russia, a Clash Over a Metals Giant | Viktor F. Vekselberg, who has a 16 percent stake in the Russian aluminum company Rusal, resigned as chairman on Tuesday after saying in an open letter to the board that the company had fallen into a "deep crisis," The New York Times reports.
As the presidential campaign has become a clash over a host of issues — from tax cuts to foreign diplomacy to claims of words taken out of context — Mr. Romney, Mr. Obama and their allies have started trading accusations over a much more delicate and personal question: Are you an American like me?
For instance, on October 31, 2015, the Kuensel, a state newspaper, reported that Sakteng police investigated seven people involved in a clash over a tsamdro resource dispute.
The collapse of that friendship left a void.The war began as a clash over an obscure sliver of borderland.
If Mr. Perry wins the nomination, the fight with Mr. Obama is likely to include a clash over whether a flat tax would be good for the country.
What China might do with all its U.S. T-bills in the event of a clash over Taiwan is a total wild card that we have put in Beijing's hands.
Or are China's netizens so cynical about their own government that they'd rather discuss a criminal's girlfriend than a clash over land with their historic enemy, Japan?
But last week, I spotted something about Trinity that made me think about a growing problem between donors and recipients: a clash over how to use a long-ago gift.
Six people associated with the mining venture were subject to court orders last May after a clash over land access, during which a TEM director fired a "warning shot" in the air.
