Regarding the visit of the representative of the Russian President Vladimir Putin
...Second and fourth President and sixth of the Russian Federation and the first to remain sober. Putin is credited with bringing political stability and re-establishing something like the rule of law, which occasionally results in somebody dropping dead from polonium poisoning. Under Putin, a new group of business magnates controlling significant swathes of Russia's economy has emerged, all of whom have close personal ties to Putin. The old bunch, without close personal ties to Putin, are in jail or in exile or dead...to Tehran and his meeting with some Iranian officials, Shamkhani said: "We have initiated a joint work plan in cooperation with some countries in the region to fight terrorism. It is a field and diplomatic work; it needs counseling to overcome some of the obstacles."
According to ISNA, Shamkhani added: "the visit of Putin’s representative was in this framework. We have established a joint military headquarter with Russia in Syria with the help of the Syrian army and the resistance forces and we have provided counseling services too."
The Secretary of the Iranian Supreme National Security Council talked about the military cooperation between his country, Russia and Iraq saying: "We are undertaking a joint military action in the axis formed by Iraq, Syria, Iran and Russia to combat terrorism. What we saw recently regarding the use of Russian aircrafts within the Iranian air space falls in this context."
Regarding the meetings of Putin’s representative with Iranian officials, Shamkhani said: "The Russian President’s representative has made several proposals due to the new circumstances in the region. His proposals were both on the military and political levels for the joint action plan. He stressed that they are working hard to keep Syria a united country. "We talked about the proposals and we reached a work agreement in this framework", he added.
It is worth mentioning that Russia and Iran have played an influential role in defending the Assad regime, ever since the eruption of the Syrian revolution. The Iranian regime started to support the Assad regime on the intelligence level, and it sent its militias into Syria after the progress made by the opposition forces.
However,
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despite all the provided Iranian support for the Syrian regime, the Syrian opposition was able to achieve massive victories in 2014, thus urging Russia to intervene and save the Assad regime from falling again.
The Russian-Iranian cooperation in Aleppo reached its peak when the Iranian militias and Russian aircrafts attacked the besieged areas controlled by the opposition in the east of the city. The brutality of the attack, the huge number of attackers and the massive corpse count of civilians, pushed the opposition to back off.
The Russian interference in Syria had started under the pretext of fighting terrorist groups, namely ISIS and Nusra. However,
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Russian aircrafts have mainly bombed moderate opposition sites, including the Western-backed groups.