You evidently need better reading skills. I did not say that you could simply withdraw from a contract unless the other party violated the terms and conditions of said contract. The federal government has broken its end of the bargain. The other parties are no longer bound to the contract.
The “contract” also does not explicitly forbid the states from leaving said contract. Since it is not expressly forbidden, that power is reserved to the states by the beloved 10th amendment. Which, for your reading pleasure, I will post now.....
“The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.”
Since the right to secede is not prohibited, the states have the full right to do so.
Section 2 - Trial by Jury, Original Jurisdiction, Jury Trials
(The judicial Power shall extend to all Cases, in Law and Equity, arising under this Constitution, the Laws of the United States, and Treaties made, or which shall be made, under their Authority; to all Cases affecting Ambassadors, other public Ministers and Consuls; to all Cases of admiralty and maritime Jurisdiction; to Controversies to which the United States shall be a Party; to Controversies between two or more States; between a State and Citizens of another State; between Citizens of different States; between Citizens of the same State claiming Lands under Grants of different States, and between a State, or the Citizens thereof, and foreign States, Citizens or Subjects.) (This section in parentheses is modified by the 11th Amendment.)
In all Cases affecting Ambassadors, other public Ministers and Consuls, and those in which a State shall be Party, the supreme Court shall have original Jurisdiction.
So in the event of a controversy, the state is obligated by the constitution to resolve it, not by armed force, but by presenting its case to the Supreme Court. See you in court counselor.