PETAR PETROV/SKY PICTURES//REUTERS
Hitrino, Bulgaria— The scene looked like something from Syria’s front lines: On December 10, a cargo train derailed and exploded in northeastern Bulgaria, killing at least seven. The train had been carrying propylene, a highly flammable gas, and the blast was so powerful it leveled dozens of buildings, trapping people beneath the rubble. The authorities quickly evacuated the village, and the government later announced a national day of mourning. As the death toll climbed, prosecutors were still piecing together how this happened.
PETAR PETROV