(AGI) Sydney, Nov 16 - Italy's policies have not dealteffectively with hydrological instability over the past 20years, Italian Prime Minister Matteo Renzi said on Sundayfollowing floods and landslides in northern Italy. "My firstact in government was to form a special unit to fighthydrological instability, which was laughed at. Now I hope itis clear that the initiative was necessary. The policies of thepast 20 years should be scrapped," he said from Sydney. . .