Britain's two-year government bond yield climbed to its highest level in more than a month on Monday as escalating tensions in the Middle East drove oil prices higher, prompting investors to increase bets that the Bank of England will keep interest rates elevated for longer, according to Reuters.The yield on the two-year gilt, which is highly sensitive to expectations for Bank of England policy, rose 11 basis points to 4.349% by 1453 GMT. The move pushed the yield to its highest level since June 11.The rise in bond yields followed an exchange of missile and drone attacks between U.S. and Iranian forces in the Gulf, stoking fears of potential disruptions to global energy supplies. The renewed geopolitical tensions triggered a rally in crude oil prices, raising concerns that higher energy costs could keep inflation under pressure.The increase in inflation expectations prompted investors to reassess the outlook for UK monetary policy. According to Reuters, financial markets were fully pricing in a 25-basis-point interest rate increase by the Bank of England in November. Just a few days earlier, on Friday, markets had fully anticipated the next rate hike would come in December, highlighting the rapid shift in expectations.The move in gilt yields reflects growing concerns that policymakers may have to maintain tighter monetary policy if rising oil prices translate into broader inflationary pressures. Higher short-term government bond yields typically signal expectations of elevated borrowing costs and can influence mortgage rates, corporate financing costs and government borrowing expenses.Impact on MarketsThe sharp rise in UK gilt yields is likely to weigh on equity market sentiment, particularly for sectors that are sensitive to higher interest rates. Real estate companies, homebuilders, utilities and consumer discretionary stocks could face pressure as higher borrowing costs reduce demand and increase financing expenses.Conversely, financial stocks, especially banks, may see some support as higher interest rates can improve net interest margins and profitability. However, any gains could be tempered by broader market volatility stemming from geopolitical uncertainty.The surge in oil prices may also lift energy stocks, while companies with high fuel and transportation costs could face margin pressures if crude prices remain elevated. Overall, investors are expected to closely monitor developments in the Middle East, movements in oil prices and upcoming economic data for further clues on the Bank of England's policy path.