As a rule of thumb, it is not a good look for government ministers to be seen pursuing vendettas against those who caused them grief in a previous life. 

Éric Dupond-Moretti, the French justice minister, may have cause to reflect on this today as he seeks to deflect a ruling by the Court of Justice of the Republic (a body set up to investigate possible ministerial misconduct) that he should face trial for allegedly trying to get his own back on old opponents who ended up under his control.