The Secretary-General of the United Nations, Antonio Guterres, on Monday expressed worries after the United States, the world’s biggest foreign aid donor, froze virtually all assistance under President Donald Trump’s new administration.

There was initial confusion among U.S. lawmakers, aid groups and the United Nations over the scope of Trump's order. That was cleared up on Friday, when the U.S. State Department issued a "stop-work" order for all existing foreign assistance and paused new aid, according to a cable seen by Reuters.

Iran must make a first step towards improving relations with countries in the region and the United States by making it clear it does not aim to develop nuclear weapons, U.N. Secretary-General Antonio Guterres said on Wednesday.

UN Chief Antonio Guterres Monday voiced concern over the US freeze on foreign aid, urging additional exemptions for critical development and humanitarian activities.Guterres "notes with concern the announcement of a pause in US foreign assistance,