[X] Accuse their Czar of terrible, awful, no-good things. See if you can draw them into an argument. (Hard Subterfuge. On a full success they'll sit still to banter, otherwise they'll just keep rolling.)
[X] "This is the IAN. Please pull over. Have you license and registration ready." (Diplomacy. Will get them to turn back out of your waters if successful.)
-[x] "Please have your holds ready for inspection so that we can check that your catch does not exceed quotas and have your fish handling equipment ready for hygeine assessment."
[X] "This is the IAN. Please pull over. Have you license and registration ready." (Diplomacy. Will get them to turn back out of your waters if successful.)
[X] Call them cowards for running away. Say they couldn't hit the broad side of a barn. Provoke them. (Prowess. Will get them to fire on you, which could be really bad or very heroic.)