If there were a democrat in the white house the stock market would be tanking right now at the news of supply chain chokepoints in oil. But, under Trump the market has reacted much less. It's easy to make the mistake of thinking of the market as a force of nature but it's really just the aggregated decisions of a few thousand wealthy people and institutions.
The market is supposed to be objective and motivated only by profit but these decisions are informed by the biases of those people. Worse, it's deeply informed by what those few thousand wealthy people *think* their peers will do.
So you have people saying "no one believes Trump when he says the war is over, but we expect the market to react to what he says so we will react in anticipation of that... thus creating the reaction."
But, this doesn't go on forever.