On the contrary, one of two situations may obtain. It may be that Parliament reaches a judgment that the action was unnecessary and unjustified, and the action therefore lapses; or it may be that Parliament considers the authorities to be completely justified in the action that they took. Those two situations are the subject of parliamentary judgment. Of course it will happen after the authorities have acted, but Parliament often reaches its judgments in just such a way. Parliament does not dictate to the Government and the authorities: it keeps their actions under scrutiny and provides the legislative base on which they act. That is what the Bill seeks to do.