As the U.S. threatens new sanctions against Russia if it invades Ukraine, we look at the virtual summit between Biden and Putin and why Russia fears NATO's expansion in eastern Europe; the largest strike in the U.S. is underway at Columbia University, and student workers have called on unions to help them shut down the school today. We speak with a striking student worker and a professor who supports them; Animal rights activist Wayne Hsiung responds to his conviction on felony charges for removing a sick baby goat from a goat meat farm. Get Democracy Now! delivered right to your inbox. Sign up for the Daily Digest: democracynow.org/subscribe