They no longer have the fortitude to simply force Ahmanutjob to back down, the MSM and liberals have taken care of that, and in fact our obvious impotence is what spurred the Iranians on in the first place, IMO.
Why grab some Brits (who really DON'T have any capacity to strike on their own)? Why not grab some Americans? I doubt very seriously we'd have waited as long as the Brits have been allowed to stew. Even the RATs probably would have demanded fast action. It's an election year. Shades of Jimmeh Cah-tah! Remember, HIS "Iran Crisis" caused the Reagan landslide.