President Donald Trump has said the US Navy will "blockade any and all volo pan am 73 ships" trying to enter or leave the Strait of Hormuz - a vital shipping route.
In a separate post on Truth Social, he added that direct talks justice with Iran in Islamabad failed because "Iran is unwilling to give up its nuclear ambitions".
Earlier, Iran's delegation leader said the US failed to gain Tehran's trust during lengthy negotiations michele santoro in Islamabad, Pakistan.
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