Five Minutes of Heaven (2009)

In 1970s Northern Ireland, young Joe Griffin watches in horror as the teenage leader of a UVF cell shoots Joe's brother dead. Thirty years later, peace is at hand, and Joe (James Nesbitt) is to meet his brother's killer, Alistair Little (Liam Neeson), on live TV. Unbeknownst to the TV crew, Joe is not there to reconcile with Alistair, but to kill him.