“Iran received assistance from Libya and North Korea in the field of missile technology, but not from the Russians,” Mohammad-Ali Jafari said in an online interview posted on YouTube on Saturday.
During the early post-revolutionary years, he added, Iran was permitted to reverse-engineer certain systems and exchange limited technical information with Tripoli and Pyongyang.
“The Russians offered no real help,” he said. “On the contrary, they are now the ones who need our missiles and drones.”
Iranian-designed drones have been key to Russia's war effort against Ukraine, even though Tehran denies providing Moscow with such weapons.
However, Moscow provided little, if any, support during Iran's brief summer war with Israel.
The two countries have signed a long-term security framework, but Russia’s restraint underscores the limits of its backing.
Earlier this month, Russian Foreign Minister Sergey Lavrov said his country was "engaged in supplying the equipment that the Islamic Republic of Iran needs" even after UN sanctions were reimposed last month.