Sentence: "The dispute over the palace HAS escalated".

[Sureshvemuri]

"The dispute over the palace, which is between the government and the Taj hotels, HAS escalated".
I don't think, -HAS- is correct in this place?
It should be "has been" OR "is" OR "was".

Thanks,
Suresh

[Mister Micawber]

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'Has' is fine. Another possible choice in this context is 'is escalating', though it conveys a different timeframe.
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Native English teacher at Mister Micawber's