Series of explosions rocked the FSB building before it burst into flames today The building is located in city of Rostov-on-Don, located 75 miles from Ukraine A deadly fire today broke out at a Russian FSB building located 75 miles from Ukraine after ammunition detonated in a warehouse. A series of explosions rocked the building, which belongs to the FSB's border patrol section, before it burst into flames in the southern Russian city of Rostov-on-Don this morning. One person was killed and two others were injured after the raging inferno ripped through the building. Video shows the building engulfed in...