The home secretary reflected the frustration and dismay of the UK security services in a series of interviews on Wednesday morning. She described the leaks as “irritating” and said she had made it clear to the US that it should not happen again.
However, within hours, American reporter Richard Engel of NBC tweeted details not released by the UK. Engel said US intelligence officers told him family members of the the killer, Salman Abedi, had warned UK security officials about him and had described him as dangerous.
Emphasis mine. At this rate, the US is definitely going to get frozen out of intelligence-sharing arrangements. Which, frankly, is probably a good thing if your goal is fighting terrorism.