The Rupee opened slightly stronger and under pressure on Tuesday with traders expecting the central bank to lean against ?pressure on the currency, while a modest pickup in portfolio inflows ?is also expected to offer support. Elsewhere, Asian currencies were mostly range-bound. The U.S. dollar struggled to hold onto gains against major peers on Tuesday ?as investors parsed Washington's ?expanded Iran-related sanctions ?and renewed efforts to ease pressure on longer-dated Treasury yields. U.S. Treasury Secretary Scott Bessent unveiled an expansion of sanctions against ?Iran on Monday, while CNBC reported that the U.S. Treasury could ?use part ?of its cash balance to buy back longer-dated bonds to ease borrowing costs. The U.S. dollar struggled to hold onto gains against major peers on Tuesday, ?as investors parsed Washington's expanded Iran-related sanctions and renewed efforts to ease pressure on longer-dated Treasury yields. The euro ?was a shade higher at $1.1668, hovering near a three-month peak hit last week, while sterling was 0.1% stronger at $1.3639, near its six-month peak. The Canadian dollar held flat at $1.3844, steadying ?after a 0.6% dip in the previous session, as the U.S. threatened to raise tariffs on Canadian goods after trade negotiations collapsed. The Japanese yen strengthened a tad to 159.21 per dollar, having given back most of its inttervention gains but still well off a multi-decade low of about 164. The dollar ?index , which measures the U.S. currency against six major peers, was down marginally at 98.96 in Asia trades. It climbed 0.16% overnight, lifting ?it from three-month lows amid a revived debasement tradex, but appeared to be struggling to sustain the momentum. The New Zealand dollar and the Australian ?dollar were ?up 0.1% ahead of the Reserve Bank of Australia's August policy meeting minutes release, last trading at $0.5965 and $0.7157, respectively.Oil prices recovered ground on ?Tuesday after settling down more than 2% in the previous session, with investors assessing the impact of ?the latest U.S. sanctions against Iran. Brent crude futures rose 27 cents, or 0.3%, to $92.44 a barrel by 0330 GMT, while U.S. West Texas Intermediate crude was up 37 cents, or 0.4%, at $85.38.......