Q&A: Cheese

What about imported cheese from non-Muslim countries, if I do not exactly know the way it was made and its ingredients?

Some of the cheese products manufactured in non-Muslim countries contain rennet extracted from the calf or other animals. We do not know whether the rennet was taken from the animal that was slaughtered according to Islamic laws; neither do we know that it has transformed into something else. So is it permissible to eat such cheese?

What is the ruling of the consumption of dairy products (e.g. milk, cheese, yoghurt, ice cream, etc) imported from non-Muslim countries, for example, China, India, etc, with the possibility of them being prepared by people of various faiths?