Today, a war can be waged without soldiers.
This is a typical example of what US and the NATO allies are playing on Russia as a key weapon and by the time Russia wouldn't get any support elsewhere it then begins to loose from it end and this has started already, sanction is more than the war itself, just that i pity the innocent suffering the consequence.
You can launch the necessary information on the Internet and introduce any necessary information into the brain of people.
Do you mean through fake news? if that's what you mean am totally in doubt, because everyone is aware already on how social media can be so influencial in this regard but people tend not to believe social media heresies except on a cognate reason with proofs.
The information war is the most successful today.
How is that successful? or do you mean is the trending news all over media?
You can do great things and have many supporters.
Same applies to doing bad things and having great numbers of haters.
But in order to join either side, we must know what is really going on. Unfortunately, we do not always know this and swallow only what they try to feed us.
What else needed to be known than Russia's invassion on Ukraine?
What else needed to be known that hackers group are launching their own attack on Russia as well?
What else needed to be known than the whole world seeing this whole thing as inhuman and against moral conduct with vivid evidence online everywhere showing how the invassion continues.