Why has MI5 raised Northern Ireland’s terrorism threat level before Biden’s visit?

The British secret security service MI5 has raised the terror threat level in Northern Ireland to “severe” just before US President Joe Biden’s visit. It means the spy agency thinks an attack is highly likely. It comes after a senior PSNI officer suffered life-changing injuries after being shot by the New IRA. Host: Ciarán Dunbar Guest: Allison Morris

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