Oil prices jump back toward $100 on Mideast ceasefire doubts

Oil prices rebounded over five percent to nearly $100 a barrel amid doubts about the sustainability of the Middle East ceasefire. Ongoing Israeli attacks on Hezbollah in Lebanon and Tehran's announcement of a toll on ships transiting the Strait of Hormuz have heightened concerns. Stock markets opened lower, following a previous relief rally after U.S. President Donald Trump announced a two-week halt in the war against Iran.