| Clue | Source | Date |
|---|---|---|
| Obstacle to negotiations (8,5) | The Guardian Quick | 31 Jan 2025 |
| Issue which mn't be agreed on (8,5) | ||
| Issue which can't be agreed on (8,5) | ||
| Where an impasse prevents further progress towards agreement | The Guardian Quick | 07 Oct 2022 |
| Impediment to progress | USA Today | 23 Sep 2019 |
| Obstacle to progress | The Times Concise | 26 Jun 2019 |
| Running through reason for deadlock | The Telegraph Cryptic | 06 Mar 2019 |
| Impediment to progress |