As of last Friday, average top-tier mortgage rates hit their lowest levels since July 20th. If they'd managed to drop even 0.01% today, it would have been a new 3-week low. 

As it stands, rates moved modestly higher in response to higher oil prices. Throughout the Iran war, oil and rates have had a broadly strong correlation because oil informs inflation expectations and inflation is a key input for the rate market.

Even after today's rise, rates remain much closer to the lower end of the range over the past 3 weeks. Logically, any positive developments in the war or diplomacy should result in lower rates. Beyond that, there's separate volatility potential related to inflation reports that come out later this week, but as always, that could be for better or worse depending on the outcome of the reports.