The US military began a blockade of Iran's ports, angering Tehran and adding uncertainty around the crucial waterway, although hopes for dialogue to end ‌the war provided some relief to oil markets where benchmark prices fell below $100 Tuesday. After a breakdown of weekend talks in Islamabad between the two adversaries, a US official said there was continued engagement and forward motion on trying to get to an agreement. Pakistani Prime Minister Shehbaz Sharif also said efforts were still under