The phrase "a major flashpoint" is correct and usable in written English.
It can be used to describe a situation or event that is highly volatile or likely to result in conflict or controversy. It often implies a high level of tension or unease. Example: The ongoing border dispute between the two countries remains a major flashpoint in diplomatic relations, with neither side showing signs of backing down.
While strategic mistrust is high between the two sides, Cyber alone is unlikely to be a major flashpoint.
A major flashpoint has been Mr. Nasheed's effort to reform a judiciary that was largely staffed by loyalists to the old government.
The action was intended to hand President Obama new leverage in what has become a major flashpoint between the world's two largest economies.
The case comes to light as harassment has become a major flashpoint within the astronomy community in the wake of an investigation by the University of California, Berkeley, that found astronomer Geoffrey Marcy had committed serial harassment over a decade (Science, 23 October 2015, p. 364).
Drogba's injury scare was just one of several dramas in a game which was ultimately decided by a controversial late penalty which sparked a major flashpoint between the benches, with Norwich boss Paul Lambert shoving Chelsea coach Jose Mario Rocha after the latter entered the visitors' technical area to celebrate.
The Middle East has long been a major flashpoint.
Drone strikes are a major political flashpoint in countries like Pakistan.
Money is another major flashpoint.
He remains in prison, and his case may well become another major flashpoint.
Costa was involved in the major flashpoint of the first half after he was chopped down by Maccabi's Tal Ben Haim, which led to the former Chelsea defender receiving his marching orders.
General Kimmitt said one major flashpoint, the Shiite slum of Sadr City on Baghdad's northeastern outskirts, was "back in Iraqi control," with Iraqi police officers returning to station houses they had abandoned as the Sadr militiamen battled American tanks last Sunday.
