Should we have been allowed to vote on going to war in Iraq? I'm sure many people would have liked to.
The problem is that this issue may depend on knowledge of secret military intelligence, which can not by its nature be released to the public (or even parliament). Though I don't want to limit what issues Interactive Voting can deal with, it may be prudent to allow parliament the right to decline a referendum when it is in the public interest.
(Alternative suggestions may be put forward to avoid such an impasse: maybe by judicial review, inter party committee or conditions on exit strategies.)