The beluga whale - nicknamed Hvaldimir - is suspected of having been trained as a spy by Russia.

Zhanna Nemtsova says her suspicions were confirmed when Spanish reporter Pablo González returned to Moscow in a prisoner swap.

Yuanjun Tang, now an American citizen, is alleged to have spied on US-based Chinese democracy activists.

As a hot war rages between Russia and Ukraine, there are fears Europe has slipped into a new Cold War.

The papers, worth £397,680 are at risk of leaving the UK unless a domestic buyer is found.

Sgt Korbein Schultz was allegedly paid $42,000 in exchange for dozens of sensitive security data.

The BBC’s Sarah Rainsford recalls phone conversations with the ex-US marine while he was imprisoned in Russia.

Detained in 2018, Whelan was freed in Russia and the West's largest prisoner swap since the Cold War.