(250331) -- WASHINGTON, March 31, 2025 (Xinhua) -- U.S. President Donald Trump walks on the South Lawn upon his return to the White House in Washington, D.C., the United States, March 30, 2025. Trump said Sunday he may impose "secondary tariffs" on Russian oil if he believes Russia is at fault for not reaching a ceasefire with Ukraine. (Xinhua/Hu Yousong)
Mon, 31 Mar 2025
