In his first trip abroad, President Joe Biden told Allies “America Is Back.”  My question is what are we back to?  Will it be pre-WWII or post-WWII?

“The U.S. remains firm in its commitment to Ukraine’s sovereignty and territorial integrity in the face of Russian aggression and — and our support for Ukraine’s Euro-Atlantic aspirations,” Biden said at the outset of the discussion, touting new agreements to broaden cooperation on defense, energy and economic development.

In remarks Tuesday marking the end of 20 years of conflict in Afghanistan, Biden espoused something of a foreign policy doctrine, stating that the “fundamental obligation of a president … is to defend and protect America, not against the threats of 2001 but the threats of 2021 and tomorrow.”

Biden seems to be following in the footsteps of his predecessor.  Trump policy was America First. In his inaugural address, President Donald Trump announced an America First approach to foreign policy and trade, which centers on reducing U.S. trade deficits and rebalancing burden sharing within alliances.  He pressured NATO allies to spend more on their defense and even considered exiting NATO.  He spoke of charging South Korea a fee for keeping troops in that country.

What would the United States do if China invaded Taiwan?  Russia has already annexed Crimea which was part of Ukraine and other than sending some armament to Ukraine and the United States did nothing.

Our nation is beginning to look like America before WWII when even FDR promised to keep America out of wars in Europe and Asia. The United States adopted an official policy of neutrality between 1935 and 1939, Congress passed five different Neutrality Acts that forbade American involvement in foreign conflicts. The impetus for these laws came from a revitalized American peace movement, the revelations of war-profiteering by American munitions businesses during the Great War (WWI), and a widespread belief among Americans that their intervention in the European war had been fruitless.

The UK stood by its allies when Germany invaded Poland. The United Kingdom declared war on Germany on 3 September 1939, two days after the German invasion. France also declared war on Germany later the same day.  The UK had not been attacked.

Under what circumstance would the United States go to war even though it was not attacked?