/ˈdʌbl əˈliːdʒəns/ – Phrase
Definition: quốc tịch kép, hai quốc tịch.
A more thorough explanation: Double allegiance refers to a situation in which an individual owes allegiance or loyalty to two separate sovereign entities, such as two countries. This can create a conflict of interest or loyalty for the individual, as they may be required to choose between the competing demands of each sovereign.
Example: The court found that the defendant’s double allegiance to two rival organizations violated the terms of his employment contract.