For better or for worse, the United States and Iran are on the brink of coming to a deal on nuclear energy with an announcement possibly coming today. A senior Iranian official told CNN that “There are two or three things that need to be worked out.” Secretary of State John Kerry, speaking of his Saturday meetings with Iranian Foreign Minister Javad Zarif, told reporters on Sunday, “We had a very good meeting. Positive. I think we’re getting to some real decisions so I will say — because we have a few tough things to do. I remain hopeful. Hopeful.” While officials have said that the earliest an agreement could be reached would be Monday, oil prices opened lower in Singapore on Monday in anticipation of a possible glut of new Iranian oil on the market.

One of the biggest sticking points in the negotiations has been Iran’s demands that an arms embargo be immediately lifted (supported by Russia), along with a ban on a 2006 ballistic missile program. Other issues include inspections of military sites, sanctions relief, and Tehran’s accountability for its past nuclear activities.