There are plenty of silly takes out there, but so many of the folks piling on Engel are clearly ignoring the part where he says "But that would be direct involvement against Russia and risk, everything." Find someone else to dunk on, there's lots of options.
Perhaps the biggest risk-calculation/moral dilemma of the war so far. A massive Russian convoy is abt 30 miles from Kyiv. The US/NATO could likely destroy it. But that would be direct involvement against Russia and risk, everything. Does the West watch in silence as it rolls?