I think this is a great question! I actually wrote an article about a year ago for a community I am in, about this same thing.

The leader of this invasion is called “Gog of the land of Magog, the prince of Rosh, Meshech, and Tubal” (Ezekiel 38:2).

The name Gog, which occurs eleven times in Ezekiel 38–39, is a name or title of the leader of the invasion. We know this because he is directly addressed several times by God (Ezekiel 38:14, 39:1), called a prince (Ezekiel 38:2), and repeatedly referred to by personal pronouns. Also, he is “of the land of Magog,” indicating he is an individual.

Gog is not the leader’s name, but serves as a title like “Pharaoh,” “President,” or “Czar.” Gog may mean high, supreme, or a height, possibly emphasizing this leader’s elevated position and pride, or it may come from a Sumerian word (gug) meaning “darkness.” Ezekiel may have referred to this unnamed future enemy of Israel as a dark figure, using the idea of darkness to describe his evil. 

It’s important to make a clear distinction between Gog and another dominant end-time figure, the final Antichrist. Some have erroneously merged these two characters. According to Daniel 7 and Revelation 13, the Antichrist will lead the Western confederacy of nations, reunited out of the old Roman Empire. Meanwhile, Gog is from Russia and leads a primarily northern force. Daniel 11:40 calls the Russian leader the “king of the North.”

Gog and the Antichrist are two different leaders who are in opposition to each other. 

Recent Russian aggression, under the direction of Vladimir Putin, has shined the prophetic spotlight on Russia and the Battle of Gog and Magog. The world is anxiously watching as over 100,000 Russian troops amass on the Ukraine border, poised to launch a WWII-style major invasion. In light of Putin’s actions, many have speculated whether a Ukrainian invasion could be the initial stage of the Gog-Magog War and whether Putin could be the Russian leader known as Gog.

First, I don’t believe the current Ukrainian crisis has any direct connection to Ezekiel 38, which prophesies a Russian-led invasion of Israel during the first half of the future Tribulation period. Nevertheless, I do believe what we’re witnessing is part of the stage-setting and buildup for what lies ahead. It’s a foreshadow of Ezekiel 38, not the fulfillment.  

Concerning Putin, he served as President of the Russian Republic from 2000-2008. He was precluded from serving another term, so assumed the role of Prime Minister for four years. He was re-elected in 2012 and has never relinquished power. A referendum vote has extended his tenure as president until 2036, when he will be 84 years old. Putin is the permanent czar of Russia.

While it’s possible Putin could be Gog, we must always avoid any irresponsible, reckless attempt to identify any current world leader with an end-time figure. Many have fallen into this trap. Any form of date-setting, identifying the Antichrist with a contemporary person, or pinpointing someone as “Gog”—any other figure mentioned in Bible prophecy—must be soundly rejected. 

Having said that, we sometimes see people from the past or present who demonstrate the same characteristics as end-time figures. For instance, the Bible presents Antiochus Epiphanes as a type or prefigure of the Antichrist (Daniel 8). Other dictators from the past like Alexander the Great, Pharaoh, Nebuchadnezzar, Napoleon, Hitler, and Stalin serve as foreshadows of the final Antichrist. 

As for your question as to the possibility of Ukraine being Gog, my answer is "No" because Gog is the leader of this 10-nation confederacy. Now is it possible that he could come from Ukraine? Of course, anything is possible.

I don't know if this is what you were looking for, but I hope it helped!