The United States is opposed to a plan by the two Koreas to set up a no-fly zone over their heavily-fortified border.
Citing two sources familiar with the matter,... Reuters say Seoul and Washington are showing growing signs of disagreement,... as the two Koreas forge ahead with plans to defuse military tensions and rebuild economic ties.
The military accord was sealed during last month's inter-Korean summit,... but U.S. officials have raised concerns it could undermine defense readiness and comes without substantial progress on denuclearization.
The accord also includes a halt in "all hostile acts",... and a gradual removal of landmines and guard posts within the DMZ.