To understand Trump's various unreliable behaviors, one must deeply grasp his series of goals:

1. A devaluation of the dollar benefits exports.

2. Allies buy more U.S. Treasury bonds and reduce yields.

3. OPEC increases production to lower inflation and interest rates.

4. U.S. stocks fall and then rise, with the rise continuing until the midterm elections to generate high voter sentiment.

5. All countries except China accept U.S. conditions on tariffs and form a trade blockade against China.

6. Raise the U.S. debt ceiling to reduce taxes.

7. Low corporate tax rates attract or force core manufacturing to return, including steel, automobiles, chips, and rare earths.

8. All U.S. businesses use stablecoins to lock in U.S. Treasury liquidity.

9. Significantly reduce the size of government and cut waste in the welfare system to greatly reduce government deficits.

10. Military spending shifts to outer space to achieve the best military deterrence effect.

One must admit that if this series of goals is realized, the U.S. will maintain its absolute global comprehensive strength as number one for decades to come, although the difficulty is not small.

So in facing Grandpa Trump's unconventional style, the best response is to understand his actions in reverse from his strategic goals.