When your neighbor behaves like north korea its time to build below ground.

Presenting the emergency underground shelter complete with its own water supply and biome. The complex is divided into 3 blocks A,B,C depending on your level of comfort your be housed either in the ample rooms in complex A with views to the main square; block B where you'll find finely furnished dorms and communal dinning with complimentary views to the waterfall. Or for those unlucky enough to be housed in block C you'll find safe secure dorms, and communal bathrooms, and a mess hall.

Entertainment is limited here, but there is a well stocked library and council rooms, as well as walks through the luscious caves; you'll also find plenty of work in the slime chunk and skeleton farms, and a chance to keep your bow well trained in the archery range.
Protected deep below sea level, the Emergency fall out shelter if secured using a double 4x3 honey block slime door made of concrete for added protection.
I hope you enjoy this design, feel free to visit there’s always lots to explore.