Across New Zealand's banking sector, the distant tremors of Middle Eastern conflict and global financial unease have found their way into the monthly repayments of ordinary homeowners. All five major banks — ASB, ANZ, BNZ, Westpac, and now Kiwibank — have raised fixed mortgage rates by 10 to 20 basis points, a quiet but consequential transmission of geopolitical risk into domestic life. The increases reflect a fundamental truth about modern finance: when the world grows uncertain, the cost of borrowing rises, and it is households — not markets — that ultimately absorb the weight.