I find myself curious today about which countries don't allow their citizens to freely obtain passports and freely leave the country for tourism or migration or whatever reason the citizen wants, if the citizen has his own means to buy a plane ticket or otherwise pay for transport.

North Korea and Cuba come to mind.

I honestly don't know about Russia and the other ex-Soviet states. Can any Russian who has the money get a passport and travel? what about Turkmenistan, Uzbekistan, etc.

China? What about dictatorial African countries (yes, I'm talking about you, Eritrea)?

I've read that even in the Philippines, which si pretty "free", young women need a special exit permit to leave for foreign jobs, and without it, they aren't allowed on the plane out of the country. Maybe I heard that wrong.

Is there a wiki on this that I've missed?