"Iran will get hundreds of billions of dollars from sanctions relief and investments to fuel its aggression and terrorism in the Middle East and North Africa and beyond," Netanyahu -- who is bitterly opposed to the deal agreed by Iran and world powers in July -- said during a visit to the Italian city of Florence.
The Israeli leader is on a tour of Italy -- his first major overseas visit since being re-elected in June.
Israel was not opposed to Iran having a civilian nuclear program, he said, but the deal hammered out in the Swiss city of Lausanne would allow Tehran "to keep and extend a formidable infrastructure that is completely unnecessary for civilian nuclear purposes but is entirely necessary for the production of nuclear weapons," Netanyahu declared.