VLADIMIR ISACHENKOV and DARIA LITVINOVA Associated Press MOSCOW (AP) — Russia on Tuesday became the first country to approve a coronavirus vaccine, a move that was met with international skepticism and unease because the shots have only been studied in dozens of people. President Vladimir Putin announced the Health Ministry's approval and said one of his two adult daughters already was inoculated. He said the vaccine underwent the necessary tests and was shown to provide lasting immunity to the coronavirus, although Russian authorities have offered no proof to back up claims of safety or effectiveness. "I know it has proven efficient and forms a stable immunity," Putin said. "We must be grateful to those who made that first step very important for our country and the entire world."