The other side ignores hundreds of U.N. Resolutions Give the Iranians everything they ask for including S-400 and S-500 systems, whatever they can afford and then some. The only way to stop the inhumanity in the Mid East is to create a balance of power so the the western fascists and their Zionist masters think twice about aggression. With some help the Iranians are more than capable of holding their own.

If you cannot live up to your obligations with an ally what will the rest of the word think of you???

I understand that there is a geopolitical game and such things can be very complicated but with the barbarianism going on in Syria maybe it's time to get more "confrontational". Time to deliver the systems to Iran.

Both US and Russia have agreed that the S-300 is NOT covered by the sanctions, being ground to air missiles:
http://www.washingtontimes.com/news/2010/may/21/russia-can-send-missiles-to-iran/

A draft U.N. resolution that would impose sanctions on Iran, including limits on global arms transfers, will not block the controversial transfer of Russian S-300 missiles to the Iranian military, according to U.S. and Russian officials.

The Obama administration had opposed the S-300 sale because the system is highly effective against aircraft and some missiles. The CIA has said the S-300 missiles, which have been contracted by Tehran but not delivered, will be used to defend Iranian nuclear facilities.

A key provision in the resolution made public this week states that all U.N. member states will agree to block sales or transfers of weapons. It lists tanks, armored vehicles, artillery, combat aircraft, warships and “missiles or missile systems as defined for the purpose of the United Nations Register of Conventional Arms.”

A close reading of the missile section of the register defines those included in the ban as missiles and launchers for guided rockets, and ballistic and cruise missiles, and missile-equipped remotely piloted vehicles. However, the register states that the missile system category “does not include ground-to-air missiles,” such as anti-aircraft missiles and anti-missile interceptors like the S-300.
http://www.state.gov/p/wha/rls/111333.htm
U.S. Register of Conventional Arms 2007
Categories of equipment and their definitions
VII. Missiles and missile launchers

(a) Guided or unguided rockets, ballistic or cruise missiles capable of delivering a warhead or weapon of destruction to a range of at least 25 kilometres, and means designed or modified specifically for launching such missiles or rockets, if not covered by categories I through VI. For the purpose of the Register, this sub-category includes remotely piloted vehicles with the characteristics for missiles as defined above but does not include ground-to-air missiles.

(b) Man-Portable Air-Defence Systems (MANPADS).