What has been the trend in Iran's uranium enrichment program in recent years?

The trend in Iran's uranium enrichment program has indeed been one of steady acceleration in recent years. This has been characterized by a significant increase in both the quantity and purity of the enriched uranium that Iran is producing. Following the United States' withdrawal from the Joint Comprehensive Plan of Action (JCPOA) in 2018, Iran began to gradually step back from its commitments under the agreement, which had previously imposed limits on its nuclear activities.

As a response to the re-imposition of economic sanctions and the perceived failure of the remaining parties to fully integrate their interests, Iran has expanded its enrichment capabilities, including the use of more advanced centrifuges. This has been part of a larger strategy to leverage its nuclear program for political negotiations, demonstrating both enhanced technical capability and the potential for a rapid escalation in nuclear development.

The increasing levels of uranium enrichment, along with the production of uranium metal, have raised significant concerns among international observers regarding the potential for Iran to develop nuclear weapons. Thus, the correct answer reflects the ongoing developments in Iran's nuclear program amidst a complex geopolitical landscape.