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The entrance of Sony Pictures Studios in Culver City, California is seen December 16, 2014.  "Guardians of Peace" hackers invoked the 9/11 attacks in their most chilling threat yet against Sony Pictures, warning the Hollywood studio not to release a film which has angered North Korea.

The entrance of Sony Pictures Studios in Culver City, California is seen December 16, 2014. "Guardians of Peace" hackers invoked the 9/11 attacks in their most chilling threat yet against Sony Pictures, warning the Hollywood studio not to release a film which has angered North Korea.

Monday, Dec 22 10 a.m. (ET)

New Challenges For U.S. Cybersecurity Posed By The Sony Hack

The hacking of Sony Pictures poses new challenges for U.S. cybersecurity. Diane and her guests discuss why this is different from other attacks and what a "proportional response" by the Obama administration might look like.

 A cotton field waits to be harvested on BTC farm near Clarksdale Mississippi.

A cotton field waits to be harvested on BTC farm near Clarksdale Mississippi.

Monday, Dec 22 11 a.m. (ET)

Sven Beckert: “The Empire of Cotton”

A new history of cotton from a global perspective: How the plant's cultivation and a reliance on slave labor ushered in modern capitalism and lay the groundwork for today's economic inequality.

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Peter Bell (L) who supports the new policy laid out by President Barack Obama stands among a group of people that disagree with him as people gathered outside the Little Havana restaurant Versailles on December 17, 2014 in Miami, United States.

Peter Bell (L) who supports the new policy laid out by President Barack Obama stands among a group of people that disagree with him as people gathered outside the Little Havana restaurant Versailles on December 17, 2014 in Miami, United States.

Friday, Dec 19 11 a.m. (ET)

Friday News Roundup – International

World leaders react to a historic shift in U.S. policy toward Cuba. Pakistan buries victims of a school massacre by the Taliban. And U.S. officials say North Korea is behind the hacking of Sony Pictures. A panel of journalists joins Diane for analysis of the week's top international news stories.

Former Florida Governor Jeb Bush speaks to the media on December 17, 2014 in Miami, Florida.

Former Florida Governor Jeb Bush speaks to the media on December 17, 2014 in Miami, Florida.

Friday, Dec 19 10 a.m. (ET)

Friday News Roundup – Domestic

A panel of journalists joins Diane for analysis of the week's top national news stories.

A close up taken on March 12, 2014 at the University Hospital in Dijon, eastern France, shows a 3D printer used for the reproduction of the skull of a patient. Dijon's pioneer surgery service uses a 3D printer to prepare tailored facial implants with greater precision, and to reduce operation length.

A close up taken on March 12, 2014 at the University Hospital in Dijon, eastern France, shows a 3D printer used for the reproduction of the skull of a patient. Dijon's pioneer surgery service uses a 3D printer to prepare tailored facial implants with greater precision, and to reduce operation length.

Thursday, Dec 18 11 a.m. (ET)

How 3-D Printing And Stem Cell Research Are Driving Medical Advances

Bioengineers are creating human body parts to replace organs and manage life-threatening diseases. How techniques like 3-D printing and stem cell research are driving medical advances and raising ethical questions

This 2013 photo shows supporters holding signs to call on the U.S. to bring home U.S. citizen Alan Gross, who was held in a prison in Cuba.  Gross was released Dec. 17.

This 2013 photo shows supporters holding signs to call on the U.S. to bring home U.S. citizen Alan Gross, who was held in a prison in Cuba. Gross was released Dec. 17.

Thursday, Dec 18 10 a.m. (ET)

The Future Of U.S.-Cuban Relations

Cuba releases American contractor Alan Gross after five years' imprisonment on espionage charges. The U.S. releases several Cubans in exchange. Details on the prisoner swap and the future of U.S.-Cuban relations.

People carry food aid from a British Navy helicopter after it made a food drop on Sherbro Island, Sierra Leone, Sunday, Dec. 7, 2014. The WFP, World Food Program and British Military took part in a three day food distribution effort to local residents on the remote Sherbro Island,  where the amount of sick people due to the Ebola virus have prevented people from farming, fishing or gathering their own food.

People carry food aid from a British Navy helicopter after it made a food drop on Sherbro Island, Sierra Leone, Sunday, Dec. 7, 2014. The WFP, World Food Program and British Military took part in a three day food distribution effort to local residents on the remote Sherbro Island, where the amount of sick people due to the Ebola virus have prevented people from farming, fishing or gathering their own food.

Wednesday, Dec 17 11 a.m. (ET)

The Social And Economic Effects Of Ebola In West Africa

The ebola epidemic in West Africa is not just a health care crisis. It has affected every corner of society in the countries most affected. Schools have been closed for months, infrastructure projects have been put on hold and GDP growth has slowed to a crawl. A discussion of the social and economic cost of Ebola in Guinea, Liberia and Sierra Leone.

A woman walks past a board listing foreign currency rates against the Russian ruble outside an exchange office in central Moscow on December 16, 2014. The Russian ruble set a new all-time record low on Tuesday after bouncing back briefly despite an emergency move by Russia's central bank to raise interest rates to 17 percent.

A woman walks past a board listing foreign currency rates against the Russian ruble outside an exchange office in central Moscow on December 16, 2014. The Russian ruble set a new all-time record low on Tuesday after bouncing back briefly despite an emergency move by Russia's central bank to raise interest rates to 17 percent.

Wednesday, Dec 17 10 a.m. (ET)

What Falling Oil Prices And New U.S. Sanctions Mean For Russia

Russia’s ruble strengthened today but it remains volatile after losing about 20 percent of its value yesterday. Diane and her guests discuss what falling oil prices and new U.S. sanctions mean for the Kremlin and the Russian economy.