Your morning briefing: What you should know for Wednesday, May 8

Two students have opened fire at a school in Denver, killing a teenager and injuring eight other people in the attack.

The gunmen opened fire in classrooms at the school, which is seven miles away from Columbine High School.

Children as young as kindergarten age were evacuated amid the horrifying scenes at STEM School in the US state of Colorado.

Two suspects, whose identities have not been released, were arrested after a struggle with armed police following the shooting.

Theresa May will today hear if a Tory rebel bid to oust her is to be launched her after she was dealt a double Brexit blow.

It was announced yesterday that she had failed to avoid keeping the UK from voting in the upcoming European elections on May 23.

And cross-party Brexit talks again failed to end in agreement in the second of the two blows in one day for the Prime Minister.

A third upset could be on the way as the outcome of talks among Tory MPs over a timetable for the PM to stand down is revealed.

Royal fans will today catch their first glimpse of the Duke and Duchess of Sussex’s newborn son as he attends his first photocall.

Harry and Meghan have been settling in to being new parents at their Frogmore Cottage home near the Queen's Windsor Castle.

And now they plan to show the baby to the world, although it is not yet known if the couple have decided on a name.

Bereaved families have called for major procedural changes to be made to the public inquiry into the Grenfell Tower fire.

They hit out at the "amnesia fix" of corporations during the inquiry and at the delay in bringing in urgent fire safety recommendations.

The families made the calls in charity Inquest’s report, Family reflections on Grenfell: no voice left unheard.

Liverpool last night overturned a 3-0 first-leg deficit to topple Barcelona and reach a second successive Champions League final.

The Spanish champions were thumped 4-0 at Anfield in feat described as one of the finest in the Liverpool’s history.

Two goals each from Divock Origi and half-time substitute Georginio Wijnaldum secured their place in the final stage.

Jurgen Klopp’s side will play either Ajax or Tottenham in the final in Madrid on June 1.