Italy’s Supreme Court has ruled that small-scale domestic cultivation of cannabis is legal, in a landmark decision triggering calls for further legalization from weed advocates and anger from the country’s conservatives. Called on to clarify previous conflicting interpretations of the law, the Court of Cassation decreed that the crime of growing narcotic drugs should exclude “small amounts grown domestically for the exclusive use of the grower.” The ruling was made on Dec. 19, but went…