Donald Trump has warned Iran that "time is running out" to negotiate a deal on its nuclear programme following the steady build-up of US military forces in the Gulf. The US president said a "massive armada" was "moving quickly, with great power, enthusiasm, and purpose" towards Iran, referring to a large US naval force. Iran insists its nuclear programme is entirely peaceful, but warned that a new US attack would prompt a response "like never before". Also: We report from Mozambique where an intense clear-up operation is underway following weeks of severe flooding. The US Secretary of State, Marco Rubio, has made a robust defence of the Trump administration's Venezuela policy, weeks after US special forces seized President Nicolás Maduro. And could dementia be diagnosed earlier by looking at changes in the way people use language?

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