I think the easiest way for Trump to counter WWIII starting before it ever gets started is to tell NATO that if they do ANYTHING he doesn't like regarding Ukraine and / or the Middle East before he takes office in January that the USA will immediately pull out of NATO and they are on their own. WWIII just ended right there.

Now, regarding Biden declaring marshal law. I think as soon as he tries to do that the FISA emails will be leaked and a lot more criminal proof will be leaked. Then the whole world will see how and why Biden is currently trying to start WWIII. Game over, WWIII averted; because doing so would cover up the Biden family's criminal money laundering enterprise so he has plenty of reasons to start a war. It also makes the MIC happy cuz war fills their pockets with blood money that's still wet with American blood.