US Treasury yields declined across the curve today, tracking a sharp drop in crude oil prices after the US and Iran halted hostilities in the Middle East over the weekend. The 10-year yield stood at 4.639%, the 30-year at 5.122%, and the 2-year fell to 4.312%. Brent crude slipped below $90 a barrel and WTI fell below $84, as investors' concerns over the Middle East eased after Iran said it would suspend attacks on the US if the US suspended attacks on Iran. Investors are watching the Federal Reserve meeting this week, where Kevin Warsh will chair for the second time. CME Group's FedWatch Tool indicates that investors see a 66.3% probability the Fed will hold rates at 3.50% to 3.75% at the July 28-29 meeting, and a 79.4% chance of at least a 0.25% rate hike to 3.75% to 4.00% at the September meeting.