"Renewed strength comes after the US said it intercepted a ⁠surprise attack on US troops," ING analysts said in a note. "Saudi Arabia ​intercepted drones from Iranian-backed groups in Iraq, which were targeting Saudi energy infrastructure," ​they said, adding that US and Saudi forces launched strikes on weapon sites across eastern Iraq. The ​US military said it intercepted ballistic missiles launched by Iran towards US forces ​in the Middle East in what Washington called "an attempted surprise attack" by Tehran. Iran's elite Revolutionary ‌Guards ⁠later said they fired several ballistic missiles at a US air base and military Central Command centre in Jordan. Read: Oil prices fall 5% to two-week lowSaudi Arabia also said its armed forces, in coordination with US Central Command, carried out "targeted strikes" against Iran-backed groups in Iraq ​it blamed for drone ​attacks on the ⁠kingdom's oil facilities.