Key TakeawaysMajor US indices closed higher following a Supreme Court ruling that restricted the executive branch's tariff powers, with the Nasdaq leading gains at 0.87%.Oil prices surged near a six-month high as geopolitical tensions escalated, with the Trump administration reportedly weighing military action against Iran.Microsoft (MSFT) announced a leadership transition for its gaming division, appointing Asha Sharma to lead Xbox as Phil Spencer retires.Federal Reserve official Musalem signaled that curr ...