Are the rulers of Muslim countries faasiqs or kaafirs?

Answer

The Qur'aanic aayat is clear and explicit. Whoever does not rule/decide according to the Shariah is a kaafir. A Muslim who sins is not a kaafir as long as he believes that his evil act is sinful. However, if he sins believing that his act is permissible, then he becomes a kaafir.

The people who are at the helm of Muslim governmental affairs in all Muslim countries today, don't only sin. They believe that the Shariah is out-dated. They actively cancel the Shariah believing that the western style laws which they enact are superior and that the Shariah is not applicable in this day.

It is not an issue of the government leaders sinning. They believe that the Shariah is not valid, hence they are kuffaar.