What kind of influence on voters is OK in your books? Political rallies where you lie about what you'll do and about your opponents? Discussions with friends? TV ads?
What does any of that have to do with citizens of Nation A refusing to trade with companies in Nation B because some of the citizens of Nation B elected a leader whom the citizens of Nation A don't like?
That is the kind of attitude that drives people apart, creates hostility, and eventually leads to war. In what world is that a good idea?
Can you imagine Americans refusing to buy BMWs because they don't like Angela Merkel?
Barely, because for the most part USA citizens are politically inert and/or incompetent and they wouldn't care, but in theory it would be perfectly normal.
Some people feel guilty for wearing (or even owning) furs, supporting an "evil" country or an "evil" corp is clearly a worse conduct.
That is the kind of attitude that drives people apart, creates hostility, and eventually leads to war. In what world is that a good idea?
Can you imagine Americans refusing to buy BMWs because they don't like Angela Merkel?