<h1>Major regional summit hosted by head of state raises governance, diplomatic immunity and public order challenges for host</h1> An international summit of a regional intergovernmental organisation convened in a Chinese port city with the host state's head of state hosting a welcome banquet attended by leaders of member and invited states and international organisations. The meeting, the largest in the group's history, will consider adoption of binding and non-binding instruments including a decade-long development strategy and may produce joint declarations affecting regional cooperation, trade and security. Extensive bilateral contacts occurred on the sidelines. The event raises governance, diplomatic immunities and public-order considerations for the host state given the scale of foreign delegations and media presence.