We track four people on their journey.
We explore the new US-Cuba relationship
Ram Madhav, National General Secretary of India's ruling Bharatiya Janata Party, on Hindu nationalism.
Politics, India, Narendra Modi, Religion, Kashmir
US Ambassador Paul Bremer, former administrator of Iraq, discusses whether his policies led to the rise of ISIL.
04 Dec 2015 19:46 GMT
Former Motherland party representative Natalia Narochnitskaya discusses Russia's stance on Ukraine, ISIL and Syria.
12 Dec 2015 09:28 GMT
Former Foreign Minister Hina Rabbani Khar on Pakistan's role in the so-called "War on Terror".
18 Dec 2015 19:51 GMT
World-renowned feminist author and democracy campaigner Naomi Wolf on the state of feminism and civil liberties.
14 Aug 2015 19:55 GMT
Mehdi Hasan challenges Martin McGuinness, exploring the definition of terrorism and when to negotiate with the enemy.
14 Mar 2014 19:51 GMT
Michael T Flynn, the former head of the US Defense Intelligence Agency, on how to deal with ISIL and Iran.
29 Jul 2015 12:41 GMT
A selection of short video clips from Head to Head interviews tackling some of the big issues of our time.
Conservationists are in a desperate and uphill battle to save India's tigers from extinction.
Former classmates separated during Iraq's invasion of Kuwait in 1990 reunite decades later.
We follow a Sesame Street composer as he learns how his music has been used to torture detainees at Guantanamo Bay.
How improving relations between communist Cuba and the capitalist US will change the lives of people on both sides.
Politics, United States, Cuba
Mayotte is a magnet for Comoros islanders who risk their lives crossing hazardous seas in search of a better life.
Poverty & Development, France, Refugees
The WHO has declared the spread of the Zika virus a global public health emergency, so how big a threat is the virus?
Health, Zika virus, US
A three-part series looking at the history of France's black community and their long struggle for recognition.
Politics, US & Canada, France