eh, let's be honest. If they were going to war, it would have happened 2 years ago when economy was strong, US soldiers were massed on the iran border, the dick-measuing was at its worst, the media was pushing for war, and those handsome UK soldiers almost got capped.
Had they followed their orders and opened fire on the 6 iranian ships, they would have been wasted, and UK, US, ISR would have gangbanged Iran back to the stone ages.
Today, we don't have the men, the money, or the media to start a 3rd war. I think this is just ramped up shit-talking on both sides. It worked too - didn't Iran say something really nice/accepting of Israel just today? I remember seeing that. Big change of course?