'Putin is frustrated': National security adviser on what military base attack reveals

US National Security Adviser Jake Sullivan says the deadly Russian airstrike on a large military base near Lviv, Ukraine, which was only miles from the Polish border, shows that Vladimir Putin is frustrated with his forces' progress.

source https://www.cnn.com/videos/world/2022/03/13/sullivan-yavoriv-military-training-ground-attack-near-lviv-poland-border-intv-bash-sotu-vpx.cnn