Two other accords, on customs co-operation and on trade in chemicals used for illicit drugs, were signed in The Hague.

ECONOMIST: Europe and America

The operation involved police, Customs and Excise officials and enforcement staff from the Vehicle and Operator Services Agency (VOSA).

BBC: A55 HGV spot checks shocking, says North Wales Police

Police and customs officers from Northern Ireland have taken part in a major cross-border operation against fuel laundering and organised crime.

BBC: Major cross-border operation against illegal fuel trade

In one operation, spot-checks by the FDA and the U.S. Customs Service found that 88 percent of drugs imported into the country by mail or courier violated federal safety standards in some way.

FORBES: Fake Drugs - All At a Pharmacy Near You!

The operation involved the Department of Agriculture, Department of Health and Social Services, the PSNI and Revenue and Customs.

BBC: Cross-border operation to combat sheep smuggling