Brexit Aftershock: What will happen the Northern Ireland border?
With 500km of Border crossing and as many roads, police and customs could not hope to stop smuggling, writes Jim Cusack
British border controls with the Republic will probably consist of increased port and airport security as it is "impossible" to secure the 500km land border, senior garda sources say.
Policing on both sides of the Border has reduced to well under half the levels there were during the 1971-1997 Provisional IRA terrorist campaign, when there was also a substantial British military presence at fortified checkpoints. The Irish Army also maintained a presence at the Border.
The four garda border divisions - Donegal, Sligo-Leitrim, Cavan-Monaghan and Louth - have a combined strength of 1,280 officers.