It was the other way around, Philip was trying to conquer Greece and he figured sending a threatening letter to Sparta might be enough, since at that point they were about powerless.
So the invasion was always planned and the courtesy of the answer didn’t matter.
War isn’t inevitable. Back in the cold war it was averted multiple times, and the USSR had a much more closed economy than China’s. China going to war with NATO would lose them all their largest trading partners.
Would you have resources or advice about cooking properly on a stainless steel pan ?
Not biologically, but in heart!