Negotations are at an 'impasse'. = Negotations have reached/hit an 'impasse'.
An arbitrator was called in to break the 'impasse'.
She had reached an 'impasse' in her career.
(..) You had me worried. - Sorry, getting the compass back Was a lot harder than I thought. I met an impasse. Did you talk to him? Didn't really get a chance. Lydia says you found another time traveler, Someone to replace Arnold. (..)2009 TvShow: Heroes Title: Chapter One 'Orientation/Jump, Push, Fall' Season: 4 Episode 1