Wolfpaw
Banned
Germany's war aims wouldn't have changed in this timeline, the Provisional government realizing how much trouble they were in is the key difference, if he'd taken power in February 1917, Lenin would have accepted these terms, he had the sense to realize Russia couldn't keep fighting.
Actually, if you take a look at Germany's war plans, they weren't going for Belarus, the Ukraine, and Finland, only Poland and the Baltics. They just gobbled up Belarus and the Ukraine when they realized "Hey, Russia's fucked! Let's snatch as much as we can while they're ripping each other's heads off, m'kay?" As for Finland, the Germans basically said, "What? You want to be independent, too? Fine, we'll back you a bit, but you're pretty much gonna be on your own."
When the Germans and the Bolsheviks met in December, 1917, to discuss peace terms, the Germans asked for Poland and Lithuania to be independent (which were already occupied) and that was all. The Bolsheviks refused to cede any land or pay any indemnities so they walked out, which would later come back to bite them.
I have no idea why you think Lenin would surrender all of these areas in March of 1917 when he thought Russia could still hold onto them in February of 1918.
Trust me, just have Russia implode as it did IOTL. Once the Germans win, yeah, have 'em boot out the Reds. But until then, leave the Ostfront alone.
After losing the Spanish-American War only 19 years before, Spain probably wouldn't pass up a chance to humilate or even annexe Portugal and grab some territory in Africa. Also, by this point, the Entente's defeat is all but inevitable, so although the gains are fairly minimal in value (except prestige perhaps), there isn't much risk either.
Why would Spain want to bugger around with Portugal because of the Spanish-American War?
"America made us look bad! I know! Let's beat up on...Portugal!"
If the Spaniards have been paying attention to World War I at all, they know that they're going to have a rough go of fighting Portugal. Defenders had a much better time of it back then. Spain attacking Portugal would just result in a really bloody ulcer for both parties. With regards to colonies, Spain was having enough trouble holding on to what they had as it was. I doubt they'd want more territories further away with more people who would probably resent them.
If your aim is to knock Portugal out of the war, just leave them alone. Once Britain and France go down, they'll sue for peace with Germany and probably only end up with a slap on the wrist.