North Korea has threatened to attack 'mainland America' if the U.S. carries out a planned military drill with South Korean troops next month.
The secretive state has reacted with anger after it was revealed more than 300,000 American and South Korean troops were planning to hold their biggest ever annual exercise following the North's nuclear tests earlier this year.
It is said the parallel Key Resolve and Foal Eagle exercises will include a staged 'pre-emptive strike' against the North - apparently leaving leader Kim Jong-Un seething. (READ MORE)
