The COMMENTARY podcast welcomes tech columnist James B. Meigs back to the show as Russian troops converge on Ukraine ahead of what looks like a pivotal weekend. Will Russia invade, or will it allow the exercises that have served as a pretext for mobilization to end quietly? Also, the return of \u201cherd immunity\u201d as a Covid off-ramp and Jim\u2019s astute article in the March issue on \u201cGood NASA vs Bad NASA. Source\nLearn more about your ad choices. Visit megaphone.fm/adchoices