War-planners have had difficulty mapping out the subterranean complex and believe there are hundreds of underground artillery and airplane sites.
McMaster described the decision to redeploy the USS Carl Vinson to the Sea of Japan as ‘prudent’ given North Korea’s ‘pattern of provocative behaviour’
“Presidents before and President Trump agreed that that is unacceptable, that what must happen is the denuclearisation of the peninsula.
“The president has asked [us] to be prepared to give us a full range of options to remove that threat.”
The news comes after Trump launched cruise missiles against Assad in Syria last week, the first time the US has directly targeted the regime during the conflict.
North Korea denounced Trump’s attack as an act of ‘intolerable aggression’ and one that justified ‘a million times over’ its push toward a nuclear deterrent.