"Intense negotiations" refers to a situation where people are having very serious and intense discussions or debates in order to reach an agreement or solution to a problem. Full definition
After five days of intense negotiations delegates were able to cut down the text by one page or two pages. (earthinbrackets.org)
Our team represents clients at all stages of litigation including at trial and in appellate courts, in intense negotiations, during arbitration, in investigations, and when dealing with the government. (balestrierefariello.com)
After weeks of intense negotiations, eight Republican legislators voted for the measure to ensure its passage. (climatedepot.com)