The Lisbon treaty is a bit hazy about what the president is to do, beyond organising summit meetings of the European Council and representing the EU in meetings with world leaders.

• 对理事会常务主席在组织欧洲理事会峰会和代表欧盟出席与世界各国领导的会晤之外，还有些什么工作职责，里斯本条约言辞含糊。