Agreed with the following two clarifications. (1) By first digit I assume we mean to the left of the decimal point so if the S&P 500 is 1864.33 at close the first digit is a 4 and (2) and by Russian tanks we mean tanks operated by Russian troops not a tank built in Russia.
You guys left one possible loophole: Does "tanks will be involved in combat" mean actually firing shells?
A Dan Carlin Podcast about how the United States is foolishly antagonizing the Russians over Ukraine. Carlin makes an analogy as to how the United States would feel if Russia helped overthrow the government of Mexico to install an anti-American government under conditions that might result in a Mexican civil war. Because of the Russian nuclear arsenal, even a tiny chance of a war between the United States and Russia has a huge negative expected value.