My opposition to Iran gaining nuclear weapons

Many Pakistanis as well as global opponents of American and Israeli imperialism believe that Iran gaining nuclear weapons is justifiable and will change the balance of power in the Middle East and the world.
I do not agree with these beliefs. I do not endorse the idea of countering one evil by embracing another.

Most supporters of the Iranian regime's pursuit of nuclear weapons are not informed in political history and do not realize the severe consequences of these religious radicals gaining such capability.

The common argument I've heard is that the West is the only entity to use nuclear weapons.
While this may be true, it was a brief time when only the West (more specifically America) possessed the nuclear bomb. Today various countries posses nuclear weapons and any one that uses them first knows the risks and consequences it poses.

Even Israel, a country in the middle of a war zone, surrounded by enemies is unlikely to use it's nuclear arsenal, also aware of the consequences; especially after receiving world condemnation various times and being mostly isolated.

The nuclear powers of today posses logic and strategy, something the Iranian Islamic regime does not. Aside from oppressing it's population, this regime is a main cause of instability in the region alongside it's main arch-rival- The Saudi royal family.

The Iranian regime are a group of religious fanatics with a terrible human rights record and are good at making enemies. With a nuclear arsenal in their control, it is unlikely they will hesitate to use it.
The fanatical Shia brand of Islam that has plagued Iran strongly encourages martyrdom, making it more credible that they will not fear being destroyed in a nuclear war.

Currently a war is already underway between America and Al-Queda. Many defenders of Iran's attempted development of nuclear weapons should ask themselves if Al-Queda or Saudi Arabia or the Taliban are justified in acquiring nuclear weapons to counter America and/or Israel.
These people are religious extremists. If they are not afraid to die fighting Americans, then there is little chance of them being afraid to use nuclear weapons and carelessly kill civilians.

Many Iranians are also pleading for outside intervention to help them overthrow the Islamic regime. But with fully developed nuclear weapons, outside intervention will be more or less impossible since a military confrontation against a nuclear power has never taken place before.

Also by developing nuclear weapons, an untrusted, extremist government like the Iranian regime will only trigger an arms race in the region, adding more instability and tension.
I understand there are many Pakistanis who mindlessly defend Middle Eastern Muslim countries, but this is all due to the funding and political influence Middle Eastern countries that go to indoctrinate young Pakistanis into their pro-Arab/Iranian views.

Many Pakistani Shias are brainwashed into worshiping Iran while many Sunnis are brainwashed into worshiping Saudi Arabia.
Even the Pakistani school system has been hit with similar pro-Middle Eastern extremist ideology, thanks to General Zia's Islamitization of Pakistan.

But the point of this post is that the Iranian Islamic regime gaining nuclear weapons won't be that different from the Taliban, Al-Queda or Saudi Arabia gaining nuclear weapons, so it is something that should not happen and must be prevented at all costs.