The US will watch and judge the North Korean leadership by its actions, she added.
The steps announced Wednesday were the result of two days of US-North Korea talks in Beijing last week. US officials initially played down expectations of progress, but now say it was the US offer to resume humanitarian aid – specifically food shipments – that appears to have swayed Pyongyang.
The State Department says the US, under the agreement, will proceed with delivery of 240,000 metric tons of food assistance, with more possible if the need in the chronically underfed nation persists.
For its part, the North agreed to once again allow inspectors from the United Nations’ nuclear watchdog, the International Atomic Energy Agency, to monitor activity at its Yongbyon nuclear complex and verify that it is honoring the enrichment moratorium.
The US and North Korea statements did not say when IAEA inspections would begin.
The agreement also calls for resumption of the long-stalled six-party talks – involving the two Koreas, the US, China, Russia, and Japan – but the announcements gave no date for a new round of negotiations.