More tests needed on Russian UN ambassador’s cause of death

NEW YORK (AP) — Medical examiners who performed an autopsy on Russia’s ambassador to the United Nations said Tuesday that more tests are needed to determine how and why he fell ill in his office and later died.
Vitaly Churkin, who died Monday, a day before his 65th birthday, had been Russia’s envoy at the U.N. since 2006. He was the longest-serving ambassador on the Security Council, the U.N.’s most powerful body.
New York City’s medical examiners concluded Churkin&