Tensions between the US and Iran have escalated in West Asia. Iran's Supreme Leader Mojtaba Khamenei warned that "Americans who come from thousands of kilometers away with deceit will have no place other than drowning in the Persian Gulf." As US President Trump tightens the blockade of Iranian ports, the price of Brent crude oil has reached $126 a barrel. Iran's navy commander has said that a new weapon will soon be tested that will give the US a "heart attack."