Transcript for Netanyahu's 'Red Line' Warning on Iran's Nukes
There's only one way. To peacefully prevent Iran. From getting atomic bombs. And that's by placing. A clear red line. And Iran's nuclear weapons program. Red lines don't lead to war. Red lines preventing. Look at NATO's charter. It made clear. In an attack on one member countries. Would be considered an attack on all. And NATO's red line helped keep the peace in Europe were nearly officer entry. So in fact the only way that you can credibly prevent Iran from developing a nuclear weapon. Is to prevent Iran from amassing enough enriched uranium for a bomb. So -- much enriched uranium. You need for a ball. And how close is -- -- to -- This is the bomb. -- -- -- -- In the case of Iran's nuclear. Plans to build a bomb. This -- -- to be filled. With enough enriched uranium. And you want us to go through. Three stages. The first stage. They have to enrich enough -- -- -- The second stage. They have to enrich and up medium enrich uranium. And the third stage and final stage. -- to enrich. Enough high enriched uranium. For the -- -- -- -- -- You -- completed. The first stage. -- -- many years. But they completed it and -- 70% of the winner. Now -- well into the second stage. And by next spring -- most by next summer but current and -- rates. -- finished. The medium enrichment. And move on to the final stage. From there it's only a few months possibly a few weeks. Before they get enough enriched uranium. For the first -- Ladies and gentlemen what I've told you now is not based on secret information. Not based on. Military intelligence. It's based on the public reports of the international atomic energy agency. Anybody can read them. They're on line. So if these are the facts. If these are the facts. -- -- Where should a red line be drawn. A red line should be drawn. Right here. Before. Before -- -- completes the second stage of nuclear enrichment. Necessary to make a bomb. Before Iran. Gets to a point where it's a few months away or few weeks away. From amassing enough enriched uranium. To make a nuclear weapon. There -- some who claimed that. Even if you -- completes the enrichment crosses. Even -- -- crosses that red line that I just drew. Our intelligence agencies will know when and where -- -- will make the fuel -- assembled the bomb and prepare the war. Look. No one appreciates. Our intelligence agencies more than the prime minister -- -- All days leading intelligence agencies are superb. Including art. -- for the many attacks. They've saved many lives. But they are not -- For over two years our intelligence agencies didn't know that -- -- was building a huge nuclear enrichment plant under a mountain. We want to risk the security of the world. On the assumption that we would find in time. A small workshop. In a country half the size of -- -- -- -- and the relevant question. Is not when. Iran will kept the ball. The relevant question is at what stage. We no longer stop Iran from getting the ball. The Red Line must be drawn on Iran's nuclear enrichment program. Because. These enrichment facilities. Other only nuclear installations. That we can definitely -- Incredibly target. And I believe that faced with a clear red line. You Ron will back down. And this will give more time. For sanctions and diplomacy to convince Iran. To dismantle its nuclear weapons program altogether.
This transcript has been automatically generated and may not be 100% accurate.