we have already nominated the narrow neck between morocco &
spain at penon de velez de la gomera
worlds shortest international dry boundary
& have even made plans to dig it up & reduce it to the vanishing
point at high tide
just for the fun of it
however the esmo border there presumably already continues
out to sea delimiting miles of territorial waters in both directions
so the border there is only the landlubbers shortest rather than
the actual shortest border in the world
the search for the actual shortest tho has led me to baarle
happily it appears to be another tossup between 2 candidates
both looking in this case like about 220 meters
these can be seen in
http://ontology.buffalo.edu/smith//baarle/baarlemap.html
as the irregular pink polygon at upper left near the name loveren
& the white quadrilateral 2 scrolls down between k12 & k13
so my questions are
can anyone give more exact border lengths for these 2 claves
or possibly better yet
can anyone find a shorter international border anywhere else