Romania is shown as a constitutional monarchy, but Romania abolished its monarch after World War 2. Romania now is now a presidential republic.
When Webb is talking to Harm after Harm returns the princess, he says Interpol arrested the Brussels shooter and "he" was being debriefed. The shooter was shown earlier as a female.
SPOILER Incorrectly regarded as goof. Later in the episode it is explained that Webb only assumed the assassin was a man and was informed of the fact that shooter was a woman shortly before arresting Minister Kepish.
Admiral Chegwidden is wearing his rank insignia improperly while wearing his standard duty uniform. Navy uniform regulations state that line officers (Ensign-Captain) are to wear their collar insignia pointed down at the edge. However flag officers (Admirals) wear their collar stars in a side-by-side line, not on top of each other like Chegwidden's are.