UK should prepare for threat from Iran, Russia, China, and N. Korea

British Royal Marines servicemen hold Union Jack after the UK-led Joint Expeditionary Force (JEF) military exercise Baltic Protector 2019 in the former Soviet military town near Skrunda, Latvia July 2, 2019.
British Royal Marines servicemen hold Union Jack after the UK-led Joint Expeditionary Force (JEF) military exercise Baltic Protector 2019 in the former Soviet military town near Skrunda, Latvia July 2, 2019.

The chief of Britain’s army has warned that within three years, its forces must be ready to confront an "axis of upheaval" formed by Russia, China, Iran, and North Korea.