<ul data-eligibleForWebStory="false">The rupee opened flat against the US dollar at 86.07, with expectations to trade between 85.75 and 86.30 for the day.Brent oil prices rose to $74.04 per barrel due to US president's warning on Israel-Iran conflict, causing concerns about supply disruptions.Conflicting reports on Iran seeking a ceasefire and soft economic data from China also influenced oil prices.The dollar index reached 98.21, with the Euro at 1.1553 and GBP at 1.3566.Bank of Japan expected to maintain policy rates, potentially slowing bond purchases next year amid economic uncertainties.Rupee touched 85.75 on Monday but fell to 86.12 after Trump's comments on Tehran evacuation.If rupee surpasses 86.20, importers might face challenges as dollar could rise to 86.70.Reserve Bank of India selling dollars above 86.20 has stabilized the rupee.Oil prices are crucial for the rupee due to foreign investments and companies buying dollars for outflows.Tuesday's trading range depends on conflict progression and RBI's actions in the market.