Iran warns US allies as Brent crude tops $100 a barrel for first time since May

Middle East tensions have pushed Brent crude above $100 a barrel for the first time since May. Iran warned it would hold accountable any country assisting the United States after Donald Trump said he was considering a "massive attack" on Iran. Yemen's Iran-backed Houthi rebels also claimed to have targeted two Saudi oil tankers in the Red Sea, raising fears for alternative shipping routes.