“We respect all our contracts and are honoring all our contractual obligations [vis-à-vis Syria],” Lavrov said in an interview with Russian-language news channel Rossiya 24.

He added, “As yet, the contracts are not finished, they have not been delivered in full.”

Lavrov further noted that Russia would block all demands for the resignation of Syrian President Bashar al-Assad’s government at the forthcoming Geneva conference.

The Russian foreign minister stated that those calls were a “direct affront to us” from certain Persian Gulf states.

Lavrov also repeated Russia’s strong objection to a no-fly zone to be implemented over Syria.

He also cautioned Western states arming militants fighting against the Syrian government, stressing that most weapons would fall into the hands of armed men from the al-Qaeda-linked al-Nusra Front.

During an interview with Lebanon’s al-Manar TV in late May, Assad said Damascus is already in possession of the first batch of S-300 missile defense systems from Russia.

He noted that the second shipment of the Russian systems will be delivered to Syria soon. The Syrian president pointed out that Syria would respond to any Israeli aggression against the country.

Russia says that the shipment of the S-300 missile defense systems is aimed at deterring foreign intervention in Syria.

Syria has been gripped by turmoil since March 2011 and the foreign-sponsored militancy has taken its toll on the lives of many people, including large numbers of Syrian soldiers and security personnel.