(BEGIN VIDEO CLIP) AMANPOUR (voice-over): This week, "Target Libya." Missile strikes begin.
OBAMA: Our consensus was strong, and our resolve is clear. The people of Libya must be protected.
AMANPOUR: Another war front opens for the United States. The world unleashes all necessary measures to stop Libyan leader Moammar Gadhafi. His son, Saif, speaks to "This Week" in a worldwide exclusive. What next for Moammar Gadhafi, the Libyan people, for the United States military? How does it end?
Then, disaster in the Pacific. Nuclear nightmare scenario in Japan. How prepared is the United States? Could it happen here? Libya and Japan, two crises with major consequences for the United States.
(END VIDEO CLIP)
ANNOUNCER: Live from the Newseum in Washington, D.C., "This Week" with Christiane Amanpour, "Target Libya," starts right now.
AMANPOUR: As we begin our broadcast, the United States is at war in a third Muslim country, Libya. We'll take you there live in just a moment. ABC's team of correspondents is covering every angle of this story. I will have an exclusive interview with Moammar Gadhafi's son and close adviser, Saif al-Islam. And I'll be joined here in the studio by Admiral Mike Mullen, chairman of the Joint Chiefs of Staff, to discuss what's being called Operation Odyssey Dawn.
But first, the latest headlines in this fast-moving story. A defiant Moammar Gadhafi is promising a long war, one day after the United States and a broad international coalition launched military strikes on his country. British and American ships and submarines fired 112 cruise missiles at more than 20 targets on the coast.
American B-2 bombers took out a Libyan airfield, all part of the largest Western military intervention in the Arab world since the start of the Iraq war. The show of force is designed to impose a no- fly zone to prevent the Libyan strongman from firing on his own people.
Sunday, Tripoli shook with the sound of explosions and anti- aircraft fire. Libyan state television reported that 48 people had been killed.
But today, in a phone call to state television, Gadhafi said Libyans stand ready to fight what he calls "crusaders." This is a fight, he says, that he will win.
(BEGIN VIDEO CLIP)
M. GADHAFI (through translator): You are not capable of a prolonged -- for a prolonged war in Libya. We consider ourselves ready for a long war. Be aware of that. We're not retreating anywhere, because this is our land. This is where we're staying. Then you're going to return defeated.
(END VIDEO CLIP)
AMANPOUR: Joining me on the line from Tripoli in Libya, Saif al- Islam, Colonel Gadhafi's second son and close adviser.
Saif, thank you for joining me. Can you tell me right now, where are you? And what is happening there right now?
GADHAFI: You know, we are in Tripoli, as you know. But yesterday, we were surprised that -- you know, the Americans and the British and the French attacked Libya, attacked five cities, terrorized people, and (inaudible) children, women were so afraid yesterday, heavy bombing everywhere. So it was a big surprise that, finally, President Obama -- we thought he's a good man and friend of Arab world -- is bombing Libya.