Oil prices are jumping again after Trump threatened to 'take the oil' in Iran

Brent crude crossed $115 per barrel on Monday as the US-Iran conflict marched on.

Mario Tama/Getty Images

• Brent crude jumped more than 2% to over $115 a barrel on Monday.
• The US and Israel's war on Iran entered its 5th week with fresh military strikes rattling markets.
• Gas prices in the US are now averaging almost $4 per gallon.

Oil prices rose on Monday after the Iran-backed Houthis in Yemen launched cruise missiles and drones at Israel, marking their entry into the war.