This was your claim:
It reveals you do not know how those wars started, or anything about the role mercenaries play in US wars, especially the last few launched by Republicans.
This reveals that you have no information which contradicts the one I have given. (Else you would have given at least some hint about the difference.)
How and why and where Trump grabs money is his only personal foreign policy - the major difference between his administration and any other Republican one. You were trying to post about Trump's foreign policy, remember? How it was "different"?
The aims of nationalism and globalism are certainly different, and Trump's foreign policy can be described as a nationalist policy. (To make you happy, one can name the nationalist policy also fascist.) The focus of globalism is not what happens in the US itself, but about global control. The US is only a power base. Instead, nationalism cares only about what happens inside the US, everything out there has to be used to get as much for the US as possible. (Different from isolationism, which rejects foreign involvement, nationalism has no problem with foreign involvement, if it gives some profit for the homeland, and Trump's policy is clearly nationalism.)
Note that as long as the world is unchallenged unipolar, there is no conflict of interest between nationalism and globalism. The global power is anyway used to make a lot of money for the US elite, the globalist as well as nationalist one. Once there was no conflict of interest, Dems and Reps were allowed by the deep state to play the circus named democracy, with some minor, more tactical than strategic, differences in the foreign policy. Once these differences were big enough to make the sheeple think that elections matter, everything was fine.
The conflict appears when the unipolar is attacked, endangered by Russia and China, or essentially already dead. And the conflict is between fighting for the global empire, which is the globalists choice, or giving it up and making the best out of the remaining global power as long as it exists yet, which is the nationalists choice. It is this split which changes the game. As far as elections play a role in the fight which faction gets the power, elections start to matter now. The split between globalists and nationalists (or if you like fascists) was not the one between Dems and Reps - there are certainly a lot of globalists among the Reps, and I'm not sure at all if all the Dems are globalists - who knows, maybe the Dem candidate 2020 will be a nationalist, we will see.
What Trump is doing makes sense if one classifies him as a nationalist. In this case, the globalists are today his political enemy, and he may be even interested to destroy their international power base, which is, in a large part, the US soft power. A nationalist would be more concerned with the hard power and in particular, the one controlled by the US army. The soft power is, of course, useful for nationalists too, but only as a power resource to be used, not as something which has any value in itself, as for the globalists. So, nationalists will be ready to trade that soft power for short term national advantages. If it is lost in such a way, so what - it is nothing they really care about.
Is there some major difference between Trump and former Rep presidents? This is not even a question worth to be considered. What was unproblematic during the unipolar world becomes problematic today, because times have changed. What has not endangered US soft power in the past is endangering it today. This changed simply because there are today some other poles, and other states do not have to submit unconditionally to US pressure. Doing the same thing today will be recognized by much more people as, say, a completely illegitimate regime change operation, as a media campaign full of obvious lies, and even globalist Western politicians may be sometimes forced to object.
Trump's policy is obviously weakening the US globalists power, most of all the soft power. Of course, one can say that former Republican, as well as Democrat, presidents have also made serious errors which weakened the US power. Last but not least, with a civilized US foreign policy the unipolar world would have been fine as for the Russians, as for the Chinese, and would not have been questioned. So, in this sense, Trump's policy can be simply seen as a continuation of the same stupidity of former (Rep as well as Dem) presidents. The decrease in US power has certainly accelerated. But is this caused by Trump's stupidity or simply by a changed world? I think both, and that one has to add that Trump doesn't (and as a nationalist does not really have to) care about the loss of globalists power.