St. Petersburg, familiared by nearly everyone, is called Leningrad during the WWII.It still sounds unbelieveable that during WWII, The fascists had besieged Leningrad for 900 days, however, they failed to destroy the city, even they couldn't attack it. Actually, the whole Russia is just like so. Russia is a stalwart nation.
Drill-down:
It is used to describe articles that are stemmed from a single lead article that give a more in-depth or detailed information of the same subject.
