The Pakistani rupee strengthened against the US dollar, appreciating 0.09% during the opening hours of trading in the inter-bank market on Tuesday. At 10am, the currency was hovering at 280.56, a gain of Re0.25 against the greenback. On Monday, the local unit closed at 280.81. Globally, the safe-haven yen hit its lowest since February on Tuesday while riskier currencies were firm against