As Nato celebrates its 75th anniversary, Finland and Ukraine have signed a long-term security agreement. Charly Salonius-Pasternak and Olga Tokariuk discuss the new pact and Nato’s support for Ukraine. Also in the programme: how has the Italian city of Bolzano managed to largely avoid the country’s demographic plunge? Plus: the White House instructs Nasa to develop a time zone for the moon and ‘The Global Countdown’ with Fernando Augusto Pacheco.See omnystudio.com/listener for privacy information.