article_snippet.sent: This was a man who basically dedicated his life to service, to people in general, but especially to people in a country where the standard of living was low and difficult.
article_snippet.sent: It's tragic that he was killed the way he was," former U.S. Ambassador Dan Simpson said.
article_snippet.sent: Another hostage was also killed in the January operation, Italian aid worker Giovanni Lo Porto.
article_snippet.sent: Both Italian aid worker Giovanni Lo Porto and Weinstein were people who "believed passionately" that Both Lo Porto and Weinstein could make a difference, Obama said.
article_snippet.sent: The letter, which was also posted on the website of the SITE Intelligence group, described his background doing human rights work.
article_snippet.sent: CNN's Elise Labott, Jim Sciutto and Pamela Brown contributed to this report.