On Monday, 3 April 2017, Russian authorities announced that a bomb exploded on a train in Sankt Petersburg's metro. The blast was said to have occurred in the train travelling between stations.
However, pictures and and video shown later were not convincing.
Skepticism is the correct approach towards all kinds of announcements by the Russian authorities and Russian media.
Although one might ask "But why would they lie"?, a more appropriate question is "Why wouldn't they"?
Paraphrasing words from one of Roy Lichtenstein's paintings, we should ask:
BUT... IN A POST-1917 WORLD HOW CAN WE BE SURE?
