Hello @VIDYA AL MAHMUD,
Nice to hear from you again.
Here's a definition I found by the UNHCR (https://www.unhcr.org/protection/historical/3ae68bf10/question-diplomatic-asylum-report-secretary-general.html):
- "The term “diplomatic asylum” in the broad sense is used to denote asylum granted by a State outside its territory, particularly in its diplomatic missions (diplomatic asylum in the strict sense), in its consulates, on board its ships in the territorial waters of another State (naval asylum), and also on board its aircraft and of its military or para-military installations in foreign territory. The other form of asylum granted to individuals, namely, that which is granted by the State within its borders, is generally given the name “territorial asylum” (...)The State in whose territory diplomatic asylum is sought is know as the “local” or “territorial” State - or even, as will be seen from footnote 75 below, the “State” of refuge” - while the person granted asylum may be called either a “refugee” or an “asylee”..."
--> Basically, diplomatic asylum is granted to people who are outside of the country's borders (in this case German consulates, ships, territorial waters of another state, etc), while territorial asylum is referred to asylum granted within the country's borders. Does this definition help?
As for your second question, my research has shown that the "Blue Passport" is valid for the same time that you have a residence permit, meaning that it's valid for three years for recognized refugees and asylum seekers. After that period, you have to apply for a new travel document. The following website explains the rights of a "Blue Passport" holder: https://handbookgermany.de/en/rights-laws/asylum/blue-passport.html
Let me know if you need any further assistance, I hope I've answered your questions so far.
All the best,