Kate Adie presents stories from DR Congo, Mexico, Hungary, Argentina, and South Africa.

The Democratic Republic of Congo is experiencing multiple conflicts over territory, ethnic tensions and minerals. In the last month, fighting between the M23 rebel group and the government is believed to have displaced around 300,000 people. But the presence of other armed groups is making the situation even more perilous. One group, the Allied Democratic Forces, has reportedly killed more than 60 people in recent weeks, and kidnapped many others. Hugh Kinsella-Cunningham spoke to one woman who had recently escaped captivity in Beni territory.

The Mexican port of Manzinillo has become a battleground for cartels, as it's where many of the raw materials for drugs such as Fentanyl are imported from Asia. Linda Pressly meets the town's mayor who is trying to turn the tide of crime - and hears of the personal sacrifices she has to make to keep safe.

Hungary has faced criticism for its progress on women's rights, but in specific areas of women's healthcare it is leading the way. Rosie Blunt was in Hungary to access care for her endometriosis and found the support on offer was second-to-none.

Off the beaten track in north-West Argentina, John Kampfner explores the high peaks and brightly-coloured lagoons that are home to vast numbers of flamingos. He also makes a curious discovery in a local museum, with deep cultural ties to the mountains.

Which is the harder language to learn - Welsh, or Xhosa? BBC Wales sports reporter Gareth Rhys Owen recently took a trip to South Africa, where he met rugby legend Makaya Jack – and also met his match when it came to deciding whose mother tongue was hardest to master.

Series Producer: Serena Tarling