I was looking for the original prediction, but I’m not finding it. I’ll keep looking – Did a search in the 2017-2018 area for submarine, but nothing was matching. I remember the prediction because there was concern in the news about the ability to cut of undersea cables and Guam was under threat from North Korea missile launches at the time. The prediction was something like a submarine is in the news.
This advice transformed every relationship in my life – not just the romantic ones.  Before I knew these things, I was unintentionally holding my partner responsible for my happiness. When I learned that I’m responsible for my own happiness and when I learned how to consistently align with it, my entire world transformed.  I now have the freedom to choose if and when I spend time with someone else, and I deliberately choose to spend time with others who get this, too.  My relationships are more meaningful, more loving, more free, and most importantly – more fun!  And my overall happiness continues to grow, too, regardless of whether I’m in a relationship or not.
This is why Vine shared that the world leaders would be taken by surprise because she was being warned they didn't realize the earth changes on our planet were already happening. When you read all of her earlier financial and economic predictions you will see she accurately has predicted everything about the world economies. She also shared that she saw problems in China (refer to Vine's earlier Chinese prediction here).

Interesting about your prediction for a volcanic eruption in Japan – the scientists are predicting that Mt. Fuji is going to erupt and I have seen another prediction of it happening this year. On a side note, I received a message that Mt. St. Helens is also going to erupt this year, but don’t have a clue when. It was just one of those messages that seem to come out of the blue, when I am not even thinking about anything in particular and have no vested interest in the event, for instance living near Mt. St. Helens. I did find another prediction on Google by somebody who claimed it was going to happen in May. We shall see what occurs.
You may recall that back in 2017 attempts to hold an independence referendum for Catalonia took place, which would have resulted in it being independent of Spain. These were met with riots, violence, and the arrests of politicians who would effectively become political prisoners. The 2019 predictions surrounding this topic bring doom and gloom but also a touch of hope. It seems that further riots will be met with more extreme violence than that of 2017, but it won’t be in vain as many other countries will voice their support for Catalonia, leading to a more promising future.