"The transfer of the systems will take place 30-40 days following the signing," the source said.
Tehran will send a delegation to Moscow next week for talks on the delivery of Russian S-300 missile defense systems, an Iranian defense ministry source told Sputnik on Tuesday.
"The signing will take place in Moscow with the participation of an Iranian military delegation and a Russian delegation. Work to clarify the date is currently underway, this will probably be next Wednesday or Thursday," the source said.
According to the source, the delegation will be headed by the Iranian defense minister or one of his deputies.
Iran will also withdraw its lawsuit against Russia immediately after the signing of a new agreement, an Iranian defense ministry source told Sputnik on Tuesday:
"The claim will be withdrawn immediately following the signing of a new delivery contract," the source said.
The delivery of Russian S-300 missile defense systems to Iran could pave way for new deals between the countries in the military-technical sphere, such as purchase of aircraft, an Iranian defense ministry also added:
"The delivery will open the door for other deals with Russia in the military sphere, especially in military aviation. We expect to sign an agreement, according to which Iran would receive a number of various Russian military aircraft," the source said.
In April, Russian President Vladimir Putin lifted the ban on S-300 deliveries, shortly after the P5+1 group of international negotiators and Iran reached a framework nuclear agreement.