The parents of Jack Letts, dubbed Jihadi Jack, say the UK government is "shirking responsibility".
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Citizenship
The UK is accused of "off-loading" its responsibilities for the move against the man dubbed Jihadi Jack.
Read moreIn 2009 all retired Gurkhas were finally allowed to settle in the UK.
Bumi Thomas, a jazz artist who thought she was a British citizen, is now facing deportation from the UK.
Subir Bhaumik
Guwahati
Citizens facing deportation are taking their lives, say activists who warn of a humanitarian disaster.
Read moreAn Indian army veteran tells the BBC about his arrest after his citizenship was questioned.
Bethany Bell
BBC News, Vienna
Austria rarely allows dual citizenship, and for some Britons this is a problem.
Read moreIn 1929, an African-American Ford engineer, Robert Robinson, was recruited to work in the USSR. He had to stay there, against his will, for nearly 50 years.
What Brexit, freedom of movement and citizenship mean to three people living in Berlin.
Only one of the twin boys was initially deemed an American citizen by the US State Department.
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