大象传媒

Russia's London embassy says it will not respond to an ultimatum for information on how a nerve toxin was used on British soil.

Prime Minister Theresa May had given Russia until the end of Tuesday to explain how Novichok, a nerve agent developed by the
Soviet military, had been used against a Russian agent.

Former Secretary of State for the US, Rex Tillerson, says Russia's actions may lead to "greater isolation", which is in no-one's interests, he added.

Bill Browder, CEO of Hermitage Capital Management which used to be one of the largest foreign investors in Russia, talks to us about how his experiences with the Russian state led him to help frame a US law on sanctions.

Brian O'Toole, an expert on economic sanctions at the Atlantic Council, a think tank in Washington, explains sanction options open to the UK.

We also hear from Hyeonseo Lee, a North Korean defector. She escaped the north by crossing a frozen river into China when she was 17. She only expected to stay a week, but ended up staying for 10 years.. Much of that was spent in hiding and pretending to be Chinese.

Presenter Vivienne Nunis is joined by Marketplace reporter Mitchell Hartmann in Portland and Adam Cotter, China expert and Head of Asia at the Official Monetary and Financial Institutions Forum.

(Picture: Rex Tillerson, outgoing US Secretary of State leaves after making a statement after his dismissal at the State Department in Washington, DC. Credit: AFP/Getty Images.)