The Holy See's U.N. Mission says Pope Francis will speak in his native Spanish to world leaders and meet privately with Russian President Vladimir Putin during a whirlwind visit to the United Nations.

Archbishop Bernardito Auza, the Vatican's apostolic nuncio and U.N. ambassador, said the Pope would likely touch on issues ranging from peace and economic development to the biggest refugee crisis since World War II in his General Assembly speech on Sept. 25.

Auza told a news conference Wednesday that Francis' 2 1/2-hour visit to the U.N. on September 25 will be the fifth by a pope and the shortest.

The pope will also speak to U.N. staff and meet privately with Secretary-General Ban Ki-moon and the incoming and outgoing General Assembly presidents.