'This Week' Transcript: Donald Trump and Ben Carson

— -- THIS IS A RUSH TRANSCRIPT FOR NOVEMBER 22, 2015 and it will be updated.

ANNOUNCER: THIS WEEK, global threat: the capital of Europe on lockdown after an unprecedented terror warning. The streets emptied, businesses closed, why officials say an attack is imminent. Martha Raddatz on the ground with the breaking details.

And exclusive interview with both Donald Trump and Ben Carson after that firestorm over their comments about Syrian refugees. What are they saying now? Trump, Carson live only on This Week.

Plus, our brand new 2016 poll: have the Paris terror attacks changed the race?

From ABC News, THIS WEEK with George Stephanopoulos begins now.

GEORGE STEPHANOPOULOS, ABC HOST: Good morning. A lot going on this week. We'll bring you our brand new poll. Both Donald Trump and Ben Carson join us live.

And we begin with that security lockdown in Europe's capital. Subways and stores closed, events canceled, Americans warned to stay indoors because of an imminent terror threat.

Our chief global affairs correspondent Martha Raddatz is on the scene in Brussels with the latest. Good morning, Martha.

MARTHA RADDATZ, ABC NEWS CORRESPONDENT: Good morning, George. The lockdown is visible everywhere you go here in Brussels, the imminent threat on everyone's mind.

And Belgian officials say the lockdown may continue through Monday since, they say, terrorists are looking at places here where they could inflict mass casualties.

(BEGIN VIDEOTAPE)

RADDATZ: It is unsettling here in Brussels this morning. A usually bustling European capital paralyzed, soldiers patrolling streets, the U.S. embassy ordering Americans here to shelter in place.

A Paris style attack is what they're expecting, the threat deemed serious and imminent.

But on this second day of the high alert, tourists were milling around the usually lively Grand Plaza.

UNIDENTIFIED FEMALE: Christmas tree, (inaudible) it's not normal, you know.

RADDATZ: Local police were offering assurances.

UNIDENTIFIED FEMALE: We need to have support from the Belgium army so everything is secure here in Brussels.

RADDATZ: In neighboring France, officials are still looking for clues after the suspected planner of the Paris attack, Abdelhamid Abaaoud was killed in a shootout Wednesday. And the manhunt growing for the world's most wanted man, the 8th Paris terrorist, Saleh Abdelsalam.

Authorities say he drove to Belgium, passing unnoticed through three security checks. The lawyer for his companions telling ABC News he looked angry and was possibly wearing a suicide belt.

Meanwhile, the survivors in Paris still haunted. The lead singer of the American band performing at La Bataclan, talked to VICE news.

JESSE HUGHES, SINGER, EAGLES OF DEATH METAL: A great reason why so many were killed is because so many people wouldn't leave their friends.

RADDATZ: The specter of the jihadist threat is also rising in Mali, where al Qaeda is claiming credit for that deadly hotel siege. An American survivor telling his harrowing story to ABC's Alex Marquardt.

ALEX MARQUARDT, ABC NEWS CORRESPONDENT: You had already resigned yourself to the fact that you were dead.

UNIDENTIFIED MALE: Yeah, basically.

And they never looked. They were shooting. The shells were hitting me. They never looked.