Pyongyang (North Korea): On Sunday, the Westerners lined up before giant statues of North Korea’s founder Kim Il-Sung and his son and successor Kim Jong-Il and, on command from their guide, bowed deeply. It is a ritual that the Trump administration intends to stop US tourists performing, with Washington due to impose a ban this week on its citizens holidaying in the Democratic People’s Republic of Korea (DPRK), as the North is officially known.