You say that Israel has no "political capital" with the US but you also say that it "effectively prevented" Israel from - as you put it - taking out Iran's military capability. Why could Israel not have acted unilaterally - unless, of course, in doing so you think it would have upset the Americans and you don't think it would have been in Israel's interest to do so which brings us back to square one. That in fact Israel does have something to lose, so define that something. I will - political capital.
Suspect Bangkok bomber arrested, found with possible bomb-making materials (Reuters)