Upvote:2
In general only three things are going to be relevant to the visiting country, assuming you have gone through all the processes normally required to get admittance:
If none of those things happen then the visiting country is unlikely to prevent you entering. That doesn't mean you aren't violating the laws of your home country.
Upvote:3
This depends a lot on the specific countries involve so there is no "one size fits all answer"
He says his passport allows him to travel freely between countries even if he has a ban.
That's generally correct. Unless the country you are trying to enter shares a data base with your home country, the border control will not know about your ban. They also might not care. They are not enforcers for other countries unless both countries have very close relationships. If your passports meets the travel requirements, you can travel with it.
... these people would have easier time getting a passport from European countries.
Highly unlikely. You may be able to get refugee status and ask for asylum but that doesn't give a you passport. That's a long and arduous route.
I think A few European countries are funding the said terrorist organization.
What the heck is that supposed to mean ?
He also said if he illegally crosses borders to another country from his home country, he can use his passport to fly to countries with no issues.
Depends. Most countries don't care if you illegally leave another country. However, they deeply care whether you illegally enter their own country. Crossing a border contains two steps: leaving country A and entering country B. Doing the second step illegally is likely to get you in trouble: Unless there are special exemptions in place, you would get deported and banned from country B.
If you manage to legally enter B (by presenting yourself at a point of entry) and you are admitted, you may indeed be allowed to travel onwards with your existing passport. As long as it's not revoked or invalidated, it's a valid travel document