Kate Adie introduces stories on Vladimir Putin's declining popularity, peace protests in Japan, Serbia's anti-corruption anger, and how Canadian robots are patrolling the Arctic.

The Kremlin has recently increased security measures around President Vladimir Putin after a string of assassinations of top Russian military figures. This comes as the president has retreated from public view, as the economic impact of Russia's war in Ukraine continues to bite. Steve Rosenberg observes the shift in the country’s mood

Japan has taken a major step away from its post-war pacifist stance, lifting long-standing restrictions on arms exports. The government says it’s a necessary step in an increasingly tense region - but it’s raising alarm and in recent weeks there have been protests in major cities across the country. Kurumi Mori reports from Tokyo.

Serbia has also been experiencing a series of protests over the past year – fuelled by anger over alleged government corruption. They began in November 2024 following the collapse of a train station roof in the northern city of Novi Sad, which killed 16 people. Jill McGivering has been to Belgrade to meet a woman whose tragic loss put her at the centre of the political crisis.

Governments around the world are increasingly investing in military robots, as the nature of modern warfare evolves. Canada’s Prime Minister Mark Carney announced an investment of $32bn in Arctic defences, where robotic surveillance technology is being put to the test in icy temperatures. David Baillie has been following one of the trials, but finds human expertise is still far from obsolete.

Series Producer: Serena Tarling