Nigeria, Aug. 25 -- The US has announced a new round of economic sanctions on Iran that are aimed at isolating the country, a move experts say indicates Washington's failure to subjugate Iran militarily after about seven months of war.

On Monday, Treasury Secretary Scott Bessent disclosed that the US would sever and isolate all economic ties with the countries conducting business with Iran.

He said this at a press conference where he outlined the planned sanctions, described as "Operation Economic Outcast."

Mr Bessent said President Donald Trump was already making phone calls to world leaders with specific requests to cease trading with the Iranian regime.

"We are level-setting with every country to tell them our expectations. We know...