UnBarnian DMZ

The UnBarnian DMZ is the border surrounding the glorious UnBarney and the evil capitalist UnAnything. Despite the name, it's not unguarded. Quite the opposite actually.
The DMZ is the 2nd most secure border in the entire world filled with guards on all sides with strict shoot to kill orders for anyone who tries to cross without permission which is almost NEVER GRANTED because escaping is illegal!
There's also a shit ton of land mines, automated turrets, spike strips and barricades on BOTH SIDES to deter escape. They are extremely effective at what they're supposed to do because no shit sherlock. This makes it very unpopular to try to make a run for it this way which is good for us but slip-ups unfortunately do happen and a good chunk of escapees are never found but thankfully we do find some and take them to justice.
This DMZ was established in 101 (1956) as the peace treaty between UnAnything and UnBarney during the 2nd UnBarnian War of 95 (1950).