... and this is how Putin should reply!

"... The big question is of course what Obama will do after Kerry and Cameron fail to change Putin's stand. There is a risk that Obama will decide to overthrow Assad by overt military means. He committed himself to that when he demanded that "Assad must go." It will hard, if not impossible for him, to retreat from that. Military means would include a "no-fly zone" which would be start to be implemented by destroying whatever is left of Syria's air defenses.Putin should plan on how to counter that. He should send a signal that can only be understood as "Up to here and no further."
On request of the Syrian government a squadron of 24 Russian fighter jets could be dispatched to Syria. They would be stationed at two Syrian airports. At each airport a battalion of Russian paratroopers would take care of the local security. Some long range early warning radar and some command and control elements would also be needed.
Supplies would come through Iranian and Iraqi airspace as well as though the port of Tartus where Russia's new permanent Mediterranean fleet is just arriving.
The declared sole and exclusive task of the Russian squadron would be to defend sovereign Syria's airspace from any outer interference. The message to Washington (and Tel Aviv) would be clear. Attacking Syria means attacking the Russian air force. Might you want to think twice about that?
Such a Russian move would be a heavens gift for Obama. He could back down from his demand that Assad has to go without losing much face. He could join everyone else in Washington in blaming Putin while appearing reasonable in not risking a wider war...."