The United States says it has seized two tankers accused of violating sanctions against Venezuela. One of them, a Russian ship, was boarded in the North Atlantic between Iceland and Britain. The US coastguard had been pursuing the ship for weeks since intercepting it off the Venezuelan coast. During the chase, the vessel underwent a change of name and adopted a Russian flag. Russian support including a submarine was on its way before the tanker was seized. The other tanker, sailing under the flag of Cameroon, was seized in the Caribbean. Also: the White House says that President Trump has been discussing options, including military force, to acquire Greenland, which it says is vital to US security. How a collection of preserved bowel cancer samples could help to unlock the mystery of why the disease is rising around the world, especially among younger people. And the Iron Age battle trumpet discovered in England - the most complete such instrument found in Europe.

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