Ayatollah Khamenei addresses a group of Iranian students in Tehran, April 20, 2016.
Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei warns against any submission to new Western demands about Iran’s missile defense program and other technologies.

“If we show any leniency toward them, they will begin playing games with biotech, nanotech and scientific issues and make problems,” Ayatollah Khamenei told a group of students in Tehran Wednesday.

Iran reached a nuclear agreement in July to have a raft of sanctions lifted but the country has come under new pressures from the US and its allies over its missile defense program since then.

"One of the most basic motivations which have prompted arrogant powers to square up against us is that a country, without relying on any power, has managed to reach the extraordinarily sensitive nuclear stage," Ayatollah Khamenei said.

The Leader also strongly denounced recent blacklisting of Lebanon’s Hezbollah movement as a terrorist organization by some Arab regimes.

“Let’s suppose a corrupt, sycophantic, hollow regime condemns Hezbollah in a statement with money and petrodollars; to hell with it! How much does it matter?

“Hezbollah and its youths are shining like the sun and are a source of honor for the world of Islam,” Ayatollah Khamenei added.