Are we on the edge of World War III?

What are the implications of Russia's invasion of Ukraine? Could it be that we are on the edge of a massively costly, truly disastrous, global war? And what does this feel like for the people of Ukraine?

Are we on the edge of World War III?
What are the implications of Russia's invasion of Ukraine? Could it be that we are on the edge of a massively costly, truly disastrous, global war? And what does this feel like for the people of Ukraine?