A/HRC/23/58 6 opponents, translating into arms consignments and political backing to both sides by their respective allies: witness the decision taken by the European Union to allow a ban on weapons deliveries to the Syrian opposition to lapse on 1 June, and the announcement of a shipment by the Russian Federation of S-300 missile batteries to the Government. Other international initiatives include meetings held by the pro-opposition Friends of Syria, and an international conference held in Tehran on 29 May. 17. On 7 May, the Minister for Foreign Affairs of the Russian Federation, Sergei Lavrov, and Secretary of State of the United States of America, John Kerry, launched a joint political initiative aimed at convening an international confe...