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Less so cancelled more never confirmed as happening. The current weather has no relation - as usual the press jumped the gun on advertising the operation.
In the internal notice issued 29 March 2018 it was still a 'possible' event.
In the same notice issued 27 April 2018 the event is listed as: "postponed until March 2019".
This should of course, not be seen as confirmation the event will be actually take place.