A bank employee armed with a rifle has shot dead four colleagues and wounded nine other people at his workplace while livestreaming the attack in downtown Louisville, Kentucky.
Donald Trump told supporters gathered in Waco the criminal investigations swirling around him were "something straight out of the Stalinist Russia horror show".
Two suspected undocumented immigrants have suffocated to death aboard a freight train and 10 others in need of medical care were taken by to hospital in south Texas.
Security is stepping up in New York City, as authorities brace for a possible indictment of former US president Donald Trump, on charges of paying hush money.
The Pentagon has released a video it says provides evidence a Russian fighter jet clipped the propeller of a US spy drone and caused it to crash into the Black Sea this week, despite Russia's denial.
A deal between the United Kingdom, United States and Australia to develop a new generation of nuclear-powered submarines will be "a disaster" if it goes wrong, former UK defence chiefs have warned.
A gunman has gone on a rampage in a small Mississippi town, killing his former wife and five other people in three locations before sheriff's deputies arrested him.
An "unidentified object" has been shot down with a missile by US fighter jets over Lake Huron, the fourth object brought down over North American airspace.
China is protesting the US downing of a Chinese balloon, saying the action violates international norms and it reserves the right to take further action in response.
