Let me throw out a guess: Ukraine is a wartime ally, Brazil is the seventh largest country in the world, India is the first, and the UK speaks English and has a lot of connections to USA.
They're each also popular IT outsourcing destinations who aren't sanctioned. You may not do business in Ukraine or Brazil, but chances are one of your customers or contractors do, and blocking those IPs isn't usually in the first or second swipe. (If you're blocking the UK and India, you're probably blocking all foreign IPs.)