Sweden and Finland have submitted their applications to become Nato’s 31st and 32nd members. We ask what Sweden and Finland would bring to the alliance, and if this expansion would make Nato’s mission of defending the west easier or harder. Andrew Mueller speaks to Jukka Siukosaari, the Finnish ambassador to the UK, Mikaela Kumlin Granit, Sweden’s ambassador to the UK, and to former Nato chief General Sir Richard Shirreff, among others.

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