I'm going to reveal just how bad of a Trekkie I am and remind you people that in the time period, the Feds and the Romulans don't like each other... at all (they fought a nasty war back in the day). If a Starfleet captain showed up at Romulus with a plan to **** up their star, you can bet they would blow him to pieces... ASSUMING Kirk/Spock could get the Enterprise past the Neutral Zone, into the Beta Quadrant and into Romulan territory without being blown up.