Martin Griffiths, the UN Under-Secretary-General for Humanitarian Affairs, said that the United Nations is urging donor countries to honour their commitments to Afghanistan.
Griffiths said that donor countries had committed 4.6 billion dollars to Afghanistan.
During a press conference in Tehran, however, he stressed that these countries have contributed less than the promised amount.
Iranian media have reported that Griffiths met Hossein Amir Abdollahian, the Foreign Minister of the Islamic Republic of Iran, on Tuesday during his visit to Tehran.
The two officials discussed the humanitarian situation in the region, from helping Afghanistan to earthquake-stricken countries such as Turkey and Syria.
Griffiths discussed the extraordinary conditions prevailing in Afghanistan and the need for 16 million people to receive humanitarian aid in the country.
He also stressed that the Taliban must fulfill their obligations to guarantee the right to education, work, and activism of Afghan women and girls.