While AI, cyber and hybrid warfare is essential to compete, it may not actually be all that is needed to win a war.
Defence Secretary Penny Mordaunt, also speaking at the RUSI conference, said: "The reality is, the world is changing and the threats increasing from a diverse range of sources. As earlier speakers have said, cyber attack is now the new normal.
"Between 2016 and 2017, NATO saw such attacks on its infrastructure increasing by 60%.
"Whether the origin is Russia, China or North Korea…or from hacktivists, criminals or extremists…the cyber threat can bring down our national infrastructure and undermine our democracy."