A newly unveiled memorial plaque to four people killed in a boating accident on Italy’s Lake Maggiore last May appears to confirm the involvement of clandestine spy services. The plaque pays tribute to two Italian secret service officers who died in the boat crash, according to a report on Monday in the Italian newspaper La Repubblica. The written explanation reads: “They lost their lives on May 28 in the waters of Lake Maggiore while carrying out a delicate operational activity with allied foreign services.” No further details were given. A former agent of Israel’s Mossad intelligence service…