Western security officials suspect Russian intelligence was behind a plot to put incendiary devices in packages on cargo planes headed to North America, including one that caught fire at a courier hub in Germany and another that ignited in a warehouse in England.

were sent to the UK from Lithuania and “appear to have been a test run to figure out how to get such incendiary devices aboard planes bound for North America,” the WSJ reported. When the WSJ asked Russia for comment about the suspected Russian plot ...