I've looked at company and government stability and control as a factor in where I put my own trust in vendor locations. The home country of a vendor is an important factor in deciding whether to trust them with your infrastructure. Either through neglect, instability or subterfuge a country's stance to both national rivals and business competition needs to be looked into.
Other normal vendor factors like longevity and quality of service we're all more comfortable with reviewing. I recommend looking into governance issues to determine added risk.