We continue to reserve all our rights under international law to take appropriate and proportionate responses to the Soviet violation.

"But on the part of the tourist, there has not been a proportionate response," he said.

It is a proportionate response to shooting, to shoot back.

But he says that he thinks the ban could be justified in court as a "proportionate response" to the problem.

At the top of the parties there appears to be a greater understanding of the need for a proportionate response.

The emergency procedure should provide an appropriate and proportionate response to this situation.

That appears to me to be the proportionate response to the risk that may have been identified.

This is not a proportionate response of a civilised power.

This is a reasonable and a proportionate response.

It said this was a "proportionate response to protecting the privacy of the individual".