The British incursions into the Irish Republic were numerous, lots of times there soldiers were reported in the border counties of Donegal Louth and Monaghan.
On one occasion 7 SAS were arrested in County Louth, on this occasion there was an apology, on most of the other occasions the British denied this, quite often helicopters landed in County Louth, as for the Iran incursion, an open mind would be the best option.