United Nations Secretary-General Antonio Guterres arrives for the High-Level Pledging Event for the Humanitarian Crisis in Yemen, in Geneva, Switzerland. Pierre Albouy/ Reuters
United Nations Secretary-General Antonio Guterres arrives for the High-Level Pledging Event for the Humanitarian Crisis in Yemen, in Geneva, Switzerland. Pierre Albouy/ Reuters
UN chief urges Yemen peace talks
The conflict in the Arab nation is in its fourth year