The story explores the divisive debate over whether a child should be free to make permanent changes to their gender.

Dr Kenneth Zucker once ran the largest public clinic in Toronto for treating children and adolescents with gender dysphoria: an often violent feeling that the body they were born in does not match their true gender. But then he was fired and his clinic closed down amid comparisons to a religious zealot trying to 'cure' homosexuality.

His supporters believe he is a victim of a virulent form of transgender politics that stifles freedom of speech. It features interviews with Zucker, his patients, the families, the clinicians and transgender activists.

The European Union faces the biggest challenge in its 60-year history, with the rise of populist eurosceptic movements across the continent. As Britain prepares to begin the process of withdrawing from the EU, the BBC's Europe editor Katya Adler asks whether the Union itself can survive.

With the conflict between Russian and England supporters at Marseille during the last summer on 2016 European Championships, Russian hooligans injured over 100 England supporters with two people in a coma. It has raised major concerns before Russia hosts the 2018 World Cup.

The story then follows the filmmaker Alex Stockley Von Statzer, who travels to Russia to track down, for a rare interview, members of the Orel Butchers - uncovering a world where aggressiveness has become a sign of honour and a icon of newly resurgent Russian masculinity.

With the UK terror threat level at "severe", the drama-documentary episode based on real-life stories focuses from inside the UK’s counter terrorism unit. It tells the incident of an ISIS-inspired terrorist group planning a firearms attack, and follows with the ongoing police investigation. The story follows with Joseph, a young man who, while in prison on drugs charges, is recruited and radicalised by an Islamic extremist. Through drama and interviews, it also reveals how UK agencies are working to keep the public safe from what experts fear is the most likely scenario for a UK next major terror attack.

Simon Reeve travels to Colombia - as 50 years of civil war draws to a close in the wake of a recently signed peace deal. He meets guerrilla fighters who have pledged to lay down arms, but also discovers a negative consequence of their disarming, as the paramilitary gangs that control the drugs trade grow in power. He travels through the country with coca farmers, who discuss the government support they will need in the turbulent times ahead, as poverty and land ownership becoming pressing issues.

The story follows the assassination of the North Korean dictator’s half-brother, Kim Jong-nam - who was attacked at Kuala Lumpur airport in February by using the lethal nerve agent VX.

The incident - caught on CCTV - uncovers the activities of North Korean secret agents who were at the airport on the day of his murder, as well as to unravel the family feud that led to it and the international business network that has allowed the Kim family to stay in power for nearly 70 years.

Filmed deep inside the notorious migrant camp, this film charts the final days of the Calais Jungle as Europe's largest migrant camp erupted into flames.

Jane Corbin explores whether the aspirations of The Balfour Declaration were doomed to inevitable failure or if there is still hope of a peaceful solution in the Holy Land.