HumansThe Novichok spy attack was brazen – it needs a tough response Hard-line regimes once tried to hide their attempts to poison defectors. Now they make them blatant. Tougher responses are required, says David Hambling Comment
HumansMaths can make sense of Trump’s ‘madman’ North Korea strategy Outlandish threats in the standoff between North Korea and Donald Trump are bluffs whose main aim is to bolster support at home, says game theorist Petros Sekeris Comment