China criticises the U.S. blockade of the Strait of Hormuz as dangerous, denying military aid to Iran and threatening retaliation.

The threat from the president has left global markets in another period of uncertainty, with questions over how the blockade will be enforced

The U.S. naval blockade of the Strait of Hormuz threatens to halt more tanker traffic, sending oil surging and risks drawing China into a widening confrontation with Washington.