Establishing a partnership with a local you can trust will allow you to run the start-up remotely, minimizing your need to travel to that country.
Ideally, you want to have your start-up run on its own, with minimal time and money investment on your part. One of the ways to do this is to have a foreign partner that handles all the day-to-day business activities so you don't have to.
You can also look for a partner that complements you and your company and that can add value to what you already do.