Pyongyang looks at states such as Iraq — where Saddam Hussein was overthrown by the United States — and Libya — its late leader, Moammar Gadhafi, gave up his
nuclear ambitions for sanctions relief and aid,
only to be toppled and killed after the United States intervened in his country's
civil unrest — and believes that
only being able to threaten the US mainland with a retaliatory
nuclear strike can stop American military intervention.
In the UK, trespass (except in places like
nuclear plants and railway lines) is a
civil offence not a criminal offence, and so you can
only be sued for compensation for any costs the landowner incurred as a result of your trespass, and you can't get a criminal record.