Israeli police have seized 137,550 cannabis plants in one of the largest operations in the country's history. The operation, which lasted three days, involved raids on 169 greenhouses in the Negev desert region and 160 greenhouses in an IDF firing range. The seized cannabis is estimated to be worth hundreds of millions of shekels. The operation is seen as a significant blow to criminals who could have used the proceeds to finance their activities. The news comes as Israel, a major player in cannabis production and research, announced a comprehensive reform of its medical marijuana regulations.