The fact that where was no national military was a weakness in which area of government

National military is a function of National defense. National defense is the responsibility of the National government. The president or the highest office in the land is  also the highest officer in the armed forces. Failure to have a national military is failure of the executive branch of government.

The significant destruction of the Articles of Confederation was just weakness. The central administration, under the Articles, was too inadequate to implement their decisions and hence had no authority. The Continental Congress had pledged funds to combat the Revolutionary War and could not return their money. To withdraw any understanding of “levying without description,” the Articles of Confederation granted only state authorities to levy taxes. To pay for its liabilities.

bias opinions and using a push pull