3. Battle for Idlib & Seeking Solitude

Correspondent Isobel Yeung gains rare access inside Idlib, Syria's last rebel-held territory, as President Assad and his allies mount a brutal bombing offensive that has civilians paying the highest price; Correspondent Dexter Thomas goes on lockdown in South Korea to search for the benefits of isolation -- ironically, just weeks before the rest of the world would join him in their COVID-19 quarantines.