About Bob D'Angelo, Michelle Ewing and Theresa Seiger, Cox Media Group National Content Desk

Four people were killed on Wednesday when a gunman opened fire at a medical office building in Tulsa, Oklahoma, authorities said. Police said the gunman was also dead.

Russian President Vladimir Putin on Thursday launched an invasion of Ukraine after weeks of rising tension between the two countries.

One helicopter crewmember has been rescued while five remain missing after the crash. Five others were also injured, according to the U.S. Navy.

A gunman killed four people, including a 9-year-old boy, and injured a fifth in an apparently targeted shooting Wednesday at a California office complex.

President Donald Trump and first lady Melania Trump have tested positive for the coronavirus, the president announced on Twitter early Friday.

The Commission on Presidential Debates has said the second presidential debate between U.S. President Donald Trump and former Vice President Joe Biden will be conducted virtually.