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Ahmadinejad, who was awarded an honorary doctorate in political sciences from the Lebanese University on Thursday, stressed his country's right to the development of nuclear technology for peaceful purposes, in a lecture he delivered afterwards.
One day earlier, Ahmadinejad offered his Lebanese counterpart an Iran-made nanoscope, for scientific research. The nanoscope, according to the Iranian president, is a technologically complicated and advanced device that only six countries own.
The Iranian president's visit received heavy criticism by Israel and the United States, which described the visit as " provocative".
U.S. State Department spokesman Philip Crowley said on Thursday that Ahmadinejad's tour of a Hezbollah stronghold in south Lebanon undermines Beirut's sovereignty and the region's security.