Complex sentence: Because the United States and Iran do not have embassies with each other, automakers from both countries are not allowed to do business within the country, so Ford is available worldwide except Cuba, Iran, North Korea, and Bhutan.
Split into simpler sentences: Because the United States and Iran do not have embassies with each other. Automakers from both countries are not allowed to do business within the country, so Ford is available worldwide except Cuba, Iran, North Korea, and Bhutan.