A Saudi-Turkish-Pakistani defense pact invoked for the first time and a drone attack on ships off Bulgaria’s coast may show fighting drawing in more countries and sea lanes, even as oil held near $100

Yemen’s Saudi-backed government says it retook the Red Sea port of Mokha from the Houthis, who have reportedly denied that it fell, and Saudi Arabia, Turkey and Pakistan invoked their Mecca Alliance defense pact for the first time. Bulgaria’s prime minister says drones hit two commercial ships off Bulgaria’s coast; Bulgarian authorities say the drones’ origin is under investigation. Brent crude stayed near $100 to $101 a barrel on Monday and Tuesday. Read together, they may show the fighting drawing in more countries and shipping lanes, while oil prices held near the same level.

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