On Monday evening, the Defence Forces’ PC9 aircraft practised their drone interception drills over Leinster using an Air Corps helicopter as a target.
By Tuesday, road closures in the city centre hinted at a much larger no-go cordon to be put in place on Thursday and Friday.
The security operation, the largest in the history of the State, will bring parts of the city to a standstill.
The Republic took its turn at the EU presidency in July, and the final and biggest events are set to take place this week. Dublin is hosting back-to-back summits on Thursday and Friday, with up to 50 European leaders and heads of European organisations set to visit the Convention Centre Dublin and the National Gallery of Ireland.
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Conor Lally, Irish Times crime and security editor, explains how the security operation will work, and what threats are feared.
- Presented by Bernice Harrison. Produced by Declan Conlon
