The short answer
Big global events can make investors nervous, change oil prices, and affect expectations about inflation. Those things can move bond markets. Mortgage rates are influenced more by longer-term bond and mortgage-backed-security markets than by one speech or one Federal Reserve headline.
Why oil comes up
If a conflict disrupts oil production or shipping, energy costs can rise. Higher energy costs can add to inflation. When inflation stays stubborn, longer-term borrowing can remain expensive.
What a buyer should actually do
Do not try to time a home purchase from one news cycle. Ask a lender for a current written scenario. Look at the rate, points or credits, cash to close, lock period, taxes, insurance, HOA dues, and the monthly payment you can comfortably carry.
The right home decision is personal. National news matters, but your savings and your payment matter more.