US stock futures edged lower Tuesday as investors returned from a holiday-extended weekend amid higher oil prices, renewed US-Iran strikes and rising inflation concerns. Canada’s retaliatory tariffs on roughly $20 billion of US goods also took effect, adding to trade tensions. Markets are pricing in about a 60% probability that the Federal Reserve will raise interest rates by 25 basis points next week. In corporate news, Uber hired banks to meet investors ahead of a planned debut euro bond sale, while Novo Nordisk halted two more trials of an experimental heart disease drug, further weakening the treatment’s prospects.