"Wars don't start with explosions - they start with silence." Frontline PBS has revealed the main official trailer for an acclaimed documentary film titled 20 Days In Mariupol, one of many films made recently about the war in Ukraine. This one premiered at the 2023 Sundance Film Festival, then it also screened at Cph:dox, Hot Docs, and many other US festivals the past few months. Ukrainian filmmaker and Pulitzer Prize-winning journalist Mstyslav Chernov offers a window into the practices of conflict zone reporters and an unflinching, anguishing account of the 20 days he and colleagues spent covering Mariupol. 20 Days in Mariupol is a Frontline + Associated Press collaboration. Not an easy watch, but an important one. "Their ever-spinning camera documents destruction & unimaginable suffering, but also captures small glimpses of hope and humanity amid the ruins, as a human counter to Russian misinformation and propaganda. And while the fighting goes on, Ukrainian journalists...