Why are we automatically assuming that there is any need for a "military response" at all? Based on what I've read about this incident, it appears that these British sailors were captured in Iranian waters. I would hope the U.S. Navy would have done the same thing back in the 1970s if some Soviet trawler were laying marine detection equipment across the mouth of New York harbor.
Well Iran supports terrorism. George Bush is fighting a war on terroism. Maybe Iran had the right to do what it did but with the new developments regarding their attempts at obtaining plutonium this places them in a very negative light. How else do you fight a war on terrorism ? Look at what Sharon has done in the last couple of months and it seems to be winning.