(Refiles to clarify board’s position on matter in penultimate paragraph) MILAN (Reuters) -Proxy advisers ISS and Glass Lewis were split over whether shareholders at Italian defence group Leonardo should vote against a request to start a liability action against CEO Alessandro Profumo, documents showed. In 2020, Profumo was sentenced in the first instance to six years imprisonment for false accounting in his previous role as chairman of Banca Monte dei Paschi di Siena. Leonardo later backed Profumo, saying “conditions did not exist” for him to resign as the decision could be overturned by secon…