Lol, I hear people in the US commenting on Putin all the time and the only reason they don't actually endorse other candidates is because they don't know shit about Russian politics. I'm not saying I do either, but I'm not going around commenting on Russian plotics all that often either. I would say commenting on other countries politics is incredibly common in the US. I would also wager a guess that a lot of the people from other countries who comment on US politics know more about it then a lot of the US citizens commenting on other countries politics.