By Angelo Amante ROME (Reuters) -Italy’s ruling rightist parties on Tuesday withdrew an amendment that would have allowed the government to continue sending weapons to Ukraine throughout 2023, a parliamentary source said, after the opposition called for a separate decree on the issue. In the wake of Russia’s invasion of Ukraine, former Prime Minister Mario Draghi’s administration introduced measures that made it possible to send weapons to Kyiv without seeking parliamentary authorisation for each shipment. This arrangement expires at the end of the year and the coalition backing Prime Minister…