Ambassador Karen Pierce

Ambassador Karen Pierce of Britain in the Security Council with Riyad Mansour, center, Palestine’s envoy to the UN, May 15, 2018. Britain’s theme for its Council presidency is the effects of conflict on ordinary people, not a controversial issue. ESKINDER DEBEBE/UN PHOTO

Vassily Nebenzia, Russia’s ambassador to the UN, and Karen Pierce, the British ambassador, right, in the Security Council before a meeting on Libya, Jan. 18, 2019. The authors of the op-ed essay argue that Britain’s role in the UN may diminish as Brexit unfolds. LOEY FELIPE/UN PHOTO