The Polish foreign minister has been filmed telling a Ukranian protest leader: "If you don't support this [deal] you'll have martial law, you'll have the army. You will all be dead."
When asked by ITV News Europe Editor James Mates if he had managed to convince the opposition, Radoslaw Sikorski appeared to reply: "I don't know."
The ministers later returned for further negotiations, after which they announced they had backing from the opposition.
This update has been edited to include video subtitles
More top news
Research by Swansea University showed one in 20 students had worked in the sex industry while studying for a degree.
Writing for ITV News, Dr Daniel Cooper says the world should not become complacent about Ebola and other problems affecting Sierra Leone.
Charities warn that sitting down too long can lead to health risks such as type 2 diabetes and cardiovascular disease.