Peter Ricketts, who advised David Cameron as prime minister and formerly served as head of the Foreign Office, said banking systems, energy or water supplies could be targeted by Kremlin cyber-assaults. Speaking to BBC Radio 4's Today programme, he called for further investment in resilience for key sectors.
"I think they've really got to start a conversation with the British people about what may be coming, because not only is Putin trying to break morale in Ukraine, he's also trying to undermine morale in European countries," Ricketts said. Asked about the potential impact of disruption, he added: "These hybrid attacks are getting more reckless, more dangerous. One day, people are going to land up being killed somewhere, and so we are going to have to look at responding in that sense and finding the money to do it."
His comments follow warnings this week from MI5 director general Sir Ken McCallum and chief of the general staff General Sir Roly Walker about the danger posed by Moscow. On Tuesday, McCallum said MI5 was devoting more resources to combating threats from hostile states than during the cold war and described Russia as the "number one aggressor." Walker spoke to 700 troops at Catterick garrison on Friday.
Ricketts also dismissed a comment by Greater Manchester Mayor Andy Burnham, who said at prime minister's questions he wanted to be a "bridge" between Washington and Kyiv. "I don't really go on this bridge business. I mean, I don't think in Trump's current mood there's any influence that Britain can have in the short term," Ricketts said. The warnings come as US President Donald Trump waived a number of economic sanctions on Russia and suggested Ukraine needed a new leader, worsening relations between Washington and Kyiv.