I haven't observed any Korean believers, from either North or South, fail to exhibit love for their fellow man or their fellow believers in Christ.
I have observed a split body of people, generally of one race and tongue, also known as a nation, with many unbelievers with very real animosities towards anything Christian.
National governance is a divine institution for believers and unbelievers alike. When the legitimate authority of national governance is violated, the divine blessings available to that institution are infringed.
If unbelievers from North Korea attempt to invade the South Korean nation and remove the freedoms of believers to study Scripture and witness the Gospel, such actions are nowhere defended in Scripture.
More primal than love for one's fellow man, is for each and every believer to remain in fellowship with God through faith in Christ by His protocol. Loving one's fellow man as oneself includes the use of force to defend legitimate authority and living within the domain of legitimate authority and respecting those authorities.
The existence of conflict doesn't entail love doesn't exist. On the contrary, a true perseverant love will always result in separation between good and evil, especially when divinely judged.
Forgiveness without repentence merely implies the degeneration of good to accept the force of evil.
Spoken as a true Christian aparatchek. Clearly political issues hold sway over humanitarian concerns in this divided nation.
I am deeply disturbed as a fellow Christian that there is no attempt to encourage North Koreans, reduced to eating the bark from trees, to escape to the South and be assimilated. Why is there no underground railroad freeing the slaves of the North? Why is the answer to the death of hundreds of thousands by starvation always couched in a dehumanizing political context?
South Korea could end the evil regime by applying some of their vaunted Christian compassion in the form of offering hope to people who have no hope.
Surely they are clever enough to figure out how to do this in a systematic, organized fashion.
The simple, awful truth remains that the South enforces the rigidity and evil of the North by refusing to offer sanctuary to some of the most blighted people in the world.