We're back with our first show of the year, and so are the rail strikes. As government ministers and union leaders trade barbs, our UK correspondent Lizzy Burden gives us a briefing on the state of play with five days of train disruption this week. Healthcare reporter Lisa Pham has the latest on the various crises facing the NHS, while Bloomberg's Caroline Hepker and Stephen Carroll discuss the positive sounds coming from Dublin over Brexit and the Northern Ireland Protocol.