“Biden is a national embarrassment on foreign policy,” a colleague wrote in a note over the weekend. This is the very mildest assessment of the administration’s doings last week. In a matter of three days, Joe Biden and those who actually run policy — primarily Secretary of State Antony Blinken and National Security Adviser Jake Sullivan — have plunged America into crisis with two of planet Earth’s most powerful nations, both nuclear armed, both essential to addressing global problems that cannot be solved without common efforts, both heretofore explicitly open to cooperative ties to the U.S…