"it is a step backward-a military alliance of the old type where we have to come to each others’ assistance no matter who is to blame, and with ourselves the judges of the law."
Quite the contrary. NATO and the Marshall Plan were two of the greatest successes in history. Europe would likely have gone to Stalin without them. Taft would have stood by and watched this happen. They culminated in Reagan, Thatcher, and Pope John Paul II ending the USSR.
The more recent failings of Europe and post-Soviet Russia do not change this.