As another community mourns a mass shooting - America is yet again asking how this can happen, and what can be done to prevent it? Siobhan Kennedy is in Texas. | Channel 4 News

Within hours of being given the go-ahead by the US to use long-range ATACAM missiles within Russia, Ukraine hit the launch button. They reportedly struck an ammunition depot in Russia's Bryansk region. Russia's Foreign Minister responded by saying it marked a "qualitatively new phase of the Western war against Russia" and that his country would "react accordingly". | Channel 4 News

"To the citizens of Russia, you are not our enemy. And I do not believe you want a bloody, destructive war against Ukraine." President Joe Biden warns a Russian invasion “remains distinctly possible”, as he implores US citizens to leave Ukraine “before it’s too late”. | Channel 4 News