A statement by the Iranian embassy said Roknabadi had maintained that the US and Israeli schemes, aimed to target the Syrian regime, were doomed to flop.
For their part, Russian and Chinese ambassadors to Lebanon reiterated their countries' rejection of any foreign interference and pressure on other states, namely on Iran and Syria.
In a related context, Roknabadi said US provocations and aggressions were jeopardy to peace in the region and worldwide, at the backdrop of what Iran had termed as a US violation of its airspace.
Iran's military said Sunday it had shot down a US reconnaissance drone in eastern Iran, while a US official said there was no indication the aircraft had been gunned down. But Iran's state-run television broadcast a two-minute video Thursday of the drone as being inspected by military officials.
Speaking to journalists in the wake of his meeting today with House Speaker, Nabih Berri, in Ain-el-Tineh, Roknabadi said the incident showed that Iran's technology was growing more advanced than that of the US.
The diplomat added that Iran had dispatched official warrants in objection to the many violations it had detected in the past, stressing that the Americans were trying to prove their military presence in the region, incompliantly with international pacts and principles of peaceful relations among countries in the world.
Iran has announced several times in the past that it brought down US, Israeli, or British drones. But the incidents did not prompt high-profile retaliations.
Turning to Syria, the ambassador maintained that the situation in this nation was improving day by day, noting less stern western-made positions in this respect.