The historic agreement between Iran and the United States in 2015 marked a significant turning point in the relationship between these two nations. This deal, also known as the Joint Comprehensive Plan of Action (JCPOA), was a negotiated settlement aimed at limiting Iran`s nuclear capabilities in exchange for the lifting of economic sanctions.

Under the agreement, Iran agreed to reduce its uranium enrichment capacity, dismantle its plutonium reactor and allow international inspectors to monitor its nuclear facilities. In return, the US and other world powers agreed to lift economic sanctions that had been crippling Iran`s economy.

The negotiations leading up to the agreement were long and difficult, with both sides having to make significant compromises. However, the agreement was viewed as a major foreign policy achievement for the Obama administration, which had worked tirelessly to secure a diplomatic solution to the Iranian nuclear issue.

Despite the initial optimism surrounding the agreement, it faced significant opposition from many quarters, including some US lawmakers and Middle Eastern allies such as Israel and Saudi Arabia. Critics argued that the agreement did not go far enough in preventing Iran from obtaining nuclear weapons capabilities, and that it would only serve to embolden Iran`s aggressive behavior in the region.

Despite these objections, the agreement remained in place until 2018, when the Trump administration announced its decision to withdraw from the JCPOA. This move was widely criticized by the international community and sparked a renewed round of tensions between Iran and the US.

In the years since the Trump administration`s withdrawal, tensions between Iran and the US have continued to simmer, with both sides taking a hard-line approach to negotiations. Despite this, there are signs that both sides may be open to returning to the negotiating table in the near future, as Iran seeks relief from the economic sanctions that have continued to impact its economy.

In conclusion, the 2015 agreement between Iran and the US was a historic diplomatic achievement that sought to address one of the most pressing foreign policy challenges of the time. While the agreement faced significant opposition, it remains a testament to the power of diplomacy and negotiation in resolving even the most intractable of conflicts. As the US and Iran look to the future, it is clear that finding a path to sustainable peace and cooperation will require continued dialogue and compromise on both sides.