But then tragedy struck at 14 weeks when doctors discovered the twins umbilical cords had become tangled, cutting of each other's blood supply, causing them both to die in the womb.
The greatest contribution to civilization in the century may well be the air-conditioning and American leads just as amazing is the speed with which this situation came to be.
This may happen, for example, in cases in which it can be demonstrated that the nonconformity was absolutely accidental, and the probability of re-occurrence is very low.
The South has previously said that it will demand that Pyongyang take responsibility for last year's military provocations and promise not to carry out any more attacks.