US Secretary of State Marco Rubio has called for greater international cooperation to counter what he describes as a resurgent and increasingly dangerous global far-left terrorism movement. His remarks, framed as a warning about historic and ongoing violent extremism, come as reports note that any crackdown on funders of such networks could draw scrutiny to businessman Neville Roy Singham, who is reportedly the subject of a grand jury investigation.

Rubio pointed to examples including firebombings in Greece and assassinations carried out by Marxist groups elsewhere in the world as evidence that far-left political violence remains an active international threat. He urged allied governments to unite, share intelligence and work together to dismantle what he characterised as interconnected networks driven by "poisonous resentment", though the article provides limited further detail on any specific action being taken against Singham himself.