Models

Country

namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
  
 class Country extends Model
 {
     public function posts()
     {
         return $this->hasManyThrough(
             Post::class,
             User::class,
             'country_id', // Foreign key on users table...
             'user_id', // Foreign key on posts table...
             'id', // Local key on countries table...
             'id' // Local key on users table...
         );
     }
 }

Retrieve Records:

$country = Country::find(1);	
 
dd($country->posts);