Since they were arriving from Turkey, it is likely, albeit not entirely certain, that they were Islamic jihadists, and not the “right-wing extremists” about which Theresa May is equally concerned. The continuing refusal to identify the motivating ideology behind “terrorist acts” and plots hamstrings the West’s ability to deal with this threat.
“Police arrest two men, both 21, at Heathrow airport who had flown in from Turkey ‘who were preparing terrorist acts,'” by Sophie Inge, Mailonline, July 1, 2017:
Two men have been arrested at Heathrow Airport on suspicion of terrorism offences after landing on a flight from Turkey.
The men, both aged 21, from Leicester and Birmingham, were detained by West Midlands counter-terrorism detectives just after 10am on Saturday.
They are being transported back to the West Midlands for questioning on suspicion of preparing terrorist acts.
The arrests were intelligence-led and there was no immediate threat to the public.
On Friday detectives arrested two men in Essex and a third in East Sussex on suspicion of preparing terrorist acts.
Sussex police officers and detectives from the Met Police Counter Terrorism Command arrested the three men – two aged 28 and one 31 – on suspicion of the commission, preparation or instigation of acts of terrorism.
Detectives have also executed search warrants at one address in East Sussex, and three addresses in east London. Enquiries are ongoing….