India, Aug. 24 -- The new head of Iran's top security body warned Sunday that Tehran will see any country's support for new US economic measures against the Islamic Republic as an "act of war," while Iran's president defended an MoU with the US.

Treasury Secretary Scott Bessent on Monday is expected to announce the new measures after the US vowed to impose an "unprecedented" level of economic warfare and isolation on a country that has lived for decades under sanctions. Also Monday, Pakistan's army chief is expected to visit Iran as mediators try to revive talks.

Meanwhile, attacks calmed on the Strait of Hormuz, but posturing did not, as a recently created Iranian authority listed dozens of vessels it said will face restrictions on fut...