In a blog, the heading is written as following:
North Korea's Kim Jong-Un orders further nuclear tests; tensions surge on in Korean peninsula
Here in this heading, we have both the prepositions together. Is it okay? If not, then how can we re-write the last line?
Also, I wrote a line ending with 'in Korean Peninsula', but then Grammarly shows an error and indicates of using 'on' instead of 'in'. However, I don't trust Grammarly that much, I would like to know which is the correct preposition?