In 'Serpent among the ruins', the romulans were outsmarted by the Federation, through Harriman;
In 'In the pale moonlight', they are outintrigued by Sisko/Garak;
In 'Inter arma enim silent leges' the romulans are again outsmarted, this time by S31;
And now, the tzenkethi murder a praetor and a senator with impunity, fully bending the romulan political process to their will.
The romulans, characterised by their penchant for intrigue/backstabbing, being outsmarted by everyone and his idiot cousin is turning into a recurring joke.