translate English to French: When it seemed that the negotiations would fail and that an agreement would not be reached, the Secretary-General of the United Nations, Mr Ban Ki-moon, also became involved and his intervention was important.
Lorsque tout semblait indiquer que les négociations échoueraient et qu'on ne parviendrait à aucun accord, le Secrétaire général des Nations unies, M. Ban Ki-moon, s'impliqua lui aussi et son intervention fut importante.