Supporters of Iran's Supreme Leader Ayatollah Ali Khamenei shout slogans during a protest after the Friday prayer in Tehran, Iran, on Jan. 17, 2020. Ayatollah Ali Khamenei on Friday said that the U.S. assassination of Iran's Quds commander Qassem Soleimani was a "cowardice act" which hurts the U.S. superpower prestige. (Photo by Ahmad Halabisaz/Xinhua)