Islamism remains first-order security threat to west, says Tony Blair

In speech marking 20 years since 9/11 attacks, former British PM warns that non-state actors may turn to bio-terrorism

The west still faces the threat of 9/11-style attacks by radical Islamist groups but this time using bio-terrorism, Tony Blair has warned.

Blair also challenges the US president, Joe Biden, by urging democratic governments not to lose confidence in using military force to defend and export their values.