Vladimir Putin launches the largest land invasion in Europe since World War II and escalates the bombing of civilian targets.

Led by its charismatic President Volodymyr Zelensky, Ukraine mounts a David-and-Goliath-style resistance that inspires the world.

A surprisingly unified West imposes the most devastating sanctions package in history, isolating Russia and effectively cutting it off from the global economy.

And across the globe, many are asking: Has Putin become unhinged? And what does that mean going forward? On this week's Power Vertical Podcast, host Brian Whitmore speaks with Georgetown University Professor and former U.S. State Department official Angela Stent, author of the book Putin's World: Russia Against the West and with the Rest, about the latest developments.