President Trump threatens to close Mexico border

President Trump has threatened to close the border with Mexico next week, unless Mexico does more to stop illegal migrants reaching the United States.

Also in the programme: Slovakia goes to the polls to choose its president; and a new Van Gogh exhibition in the UK.

(Picture: A section of the US-Mexico border fence as it ends -Mexico on the left side and the United States on the right - at El Nido de las Aguilas, eastern Tijuana, Baja California state on 26th March 2019. Credit: Guillermo Arias/AFP/Getty Images)