Passports: political statements over design and colours
Some Asian nations are objecting to the new design for Chinese passports, which show China's borders extending into disputed areas.
Adam Fleming looked at why passports can be seen as political and emotive statements - even from the colour of their covers as some British people objected when the red EU-style design was adopted.
He spoke to Martin Lloyd, author of The Passport, and to Lord Hannay, a former UK ambassador to the EU.
More clips on our BBC website, external; 'like' us on Facebook, external page; follow us on Twitter, external or watch full programmes from the last seven days via BBC iPlayer