Climate campaigners wearing masks of world leaders enact a “Squid Game” themed protest stunt with a campaigner wearing a mask of Russian President Vladimir Putin, front left, and another wearing a mask of U.S. President Joe Biden, center, on the fringes of the COP26 U.N. Climate Summit, in Glasgow, Scotland, Tuesday, Nov. 2, 2021. The U.N. climate summit in Glasgow gathers leaders from around the world, in Scotland’s biggest city, to lay out their vision for addressing the common challenge of global warming.