As for the P.L.O., the Administration plans to challenge it to make some equally substantive concessions to Israel.

But the Iranian side offered no new substantive concessions, they said.

Be aware that the long standing policy of the British Government is not to make substantive concessions to hostage takers.

Most of the substantive concessions were made by Israel.

As a consequence, the Howes were only granted the ability to issue pardons and amnesties, but not to make any substantive concessions.

The long-standing policy of the British Government is not to make substantive concessions to hostage takers.

So they reluctantly agree to meet each other and then refuse to make any substantive concession.

But unless one side or both makes substantive concessions, it could be extremely difficult for a deal to be completed.

You should be aware that the long-standing policy of the British government is not to make substantive concessions to hostage takers.

Such backtracking raises the possibility that the contract won't contain any substantive concessions, which would be a lost opportunity for a city still struggling with recession.