The United States and Iran are scheduled to hold a new round of talks on the Iranian nuclear issue on the 15th. Before the talks, the United States decided to withdraw non-essential US personnel and their families from the US embassy in Iraq and other places, and the US defense secretary approved the voluntary withdrawal of US military families in the Middle East. US President Trump expressed his optimism about reaching an agreement. Iran sent a double signal, on the one hand, believing that the two sides may even reach an agreement "soon", and on the other hand, warning that if Iran is attacked after the talks break down, it will take retaliatory actions and hit US military bases in the Middle East. (CCTV)