Ukraine is claiming responsibility for the assassination of a top Russian general in Moscow. Lt. Gener. A New York grand jury has indicted Luigi Mangione, the man accused of killing UnitedHealthcare CEO Brian Thompson, with first-degree murder and killing as an act of terrorism. A New York grand jury has indicted Luigi Mangione, the man accused of killing UnitedHealthcare CEO Brian Thompson, with first-degree murder and killing as an act of terrorism. Lilia Luciano has the latest on the case. Two astronauts who have been stuck aboard the International Space Station for months will have to wait even longer to come home. Their planned returned was delayed once again on Tuesday, pushing their earliest return trip back to late March. Manuel Bojorquez has more. President-elect Donald Trump's pick of Robert F. Kennedy Jr. to lead the Department of Health and Human Services has brought back a debate about fluoride in drinking water that many thought was settled decades ago. Meg Oliver takes a look at how a lack of fluoride can affect dental health. Congress is voting on whether to revamp Social Security so that certain former public sector employees who have been shut out from the system will receive full benefits. Kati Weis explores why some seniors don't receive the full payments and the burden this place on them. The surgeon general says male loneliness should be considered a national epidemic. For "Eye on America," Mark Strassmann takes a look at how one group in Massachusetts is helping men open up and be more vulnerable with each other.