Top-tier 30-year fixed mortgage rates rose 0.07% on Monday, reversing direction after falling 0.14% over the previous week.
Trump's rejection of Iran's counterproposal to end the war pushed oil prices higher, feeding inflation worries that typically pressure bond yields and mortgage rates.
Oil does not directly set mortgage rates, but the current link has strengthened because higher energy costs can raise shipping prices and broader inflation.
April inflation data due this week could still shift rates again, with further moves hinging largely on whether peace talks make progress.
Is the US-Iran conflict the real reason for rising mortgage rates, or is a deeper economic issue being overlooked?
With peace talks failing, how will the blockade of a single strait continue to impact your personal finances?