A Russian drone strike on a train near the Ukraine-Poland border may have been aimed at a diplomatic train carrying former UK Prime Minister Boris Johnson, former Swedish Prime Minister Carl Bildt and European security officials, Ukraine’s state railway operator has claimed.

Johnson, who was travelling in Ukraine, was said to be unharmed after the train was temporarily evacuated at about 5am following nearby drone attacks and an incident on the…

The former British prime minister was travelling back towards Poland after attending a major security conference in Kyiv when the train stopped at around 5am amid a drone alert.