UN Secretary-General Antonio Guterres called Tuesday for solidarity and cooperation to address a "world in peril" at the opening of the 77th United Nations General Assembly.
"We face a world in peril across our work to advance peace, human rights and sustainable development," Guterres said, citing conflicts and climate change, a "broken global financial system," poverty, inequality, hunger and divisions.
Next week, dozens of heads of state and government from around the world will take turns speaking at the General Assembly.
While there are currently no changes to the schedule, the funeral for Queen Elizabeth II next Monday, which many leaders are expected to attend, leaves uncertainty about the week's proceedings.
A summit on education scheduled for Monday, for which 90 leaders had previously confirmed their attendance, will go ahead.
Guterres will not travel to London for the queen's funeral, his spokesman said.