Britain's Prime Minister Boris Johnson with Alex Cresswell, CEO of Thales UK, right, and Philip McBride, Managing Director of Thales Belfast, on the factory floor at Thales weapons manufacturer in Belfast, Monday May 16, 2022, during a visit to Northern Ireland. Johnson said there would be ??sa necessity to act??? if the EU doesn't agree to overhaul post-Brexit trade rules that he says are destabilizing Northern Ireland's delicate political balance. Johnson held private talks with the leaders of Northern Ireland's main political parties, urging them to get back to work. (Liam McBurney/Pool via AP)