British media are referring to the UK PM's recently toughened stance as her "war on terror," using the same term used previously by President Bush and PM Blair.
The UK's terrorist threat level has been "severe" for a long time now, but after the Manchester bombing May raised it to "critical," concerned about another attack.
Although the UK is not as dangerous as mainland Europe due to residents having lesser connections to Islamic militant groups, UK security officials' comments on Manchester were about only-a-matter-of-times and can't-stop-them-alls. Security forces there prevents dozens of attacks per year, reportedly.
The change in tone comes at a time when May was being criticized for being too "weak and unstable."