First, a warehouse in east London being used to supply aid to Ukraine burned down. Weeks later, an Ikea in Vilnius, Lithuania, mysteriously caught fire.
Swedish investigators were already looking into the possibility that several railway derailments could have been caused by a state-backed saboteur.
Then an inferno engulfed the largest shopping centre in Warsaw, Poland’s capital. It was Donald Tusk, the Polish prime minister, who began joining the dots to suggest the West was under attack by Russian espionage.
