There seems to have been a lot of progress made in these years on overtures towards peace with the Romulans; enough so that the Romulan ambassador Nanclus was sitting in on military briefings with the UFP President in the Palais de la Concorde by 2293. One could infer that this was a sort of brief but golden age for relations between the Romulan Star Empire and the Federation. This period could have come about due to Spoiler: the Rihaansu saga the revolution in the Romulan state and subsequent rise of Empress Ael in the early 2270's as shown in the Rihaansu books. This could conceivably have blossomed in the next 2 decades until the 2390's when conspiracy and possible counter-revolution may have ended the reign of the Empress and began the slow spiral which sent all that sunny happiness and good will to hell. Relations between the states definitely seemed cooler by the time of the 2310's until the Tomed incident finally sealed the deal and slammed the door shut on the Neutral Zone once again.