Question: Of the two presidents who served during the heyday of the "Kansas City Star," which one did NOT use nuclear weapons in war?

The "nuclear button" is a figurative term referring to the power to use nuclear weapons. "Pushing the nuclear button" refers to actually using them.  The actual procedure for using such weapons is more complex than simply pushing a button.  The "nuclear button" may be transferred to another official due to political changes or the incapacitation of a person currently in control of it. <SEP> Green Light Teams were Special Forces squads containing members of the U.S. Army, U.S. Navy, and the U.S. Marines during the height of the Cold War with the Soviet Union.  These Green Light Teams, also referred to as Atomic Demolition Munitions Specialists, were trained to advance, arm, and deploy Special Atomic Demolition Munitions behind enemy lines.  These Atomic Demolition Munitions, also known as ADMs and backpack nukes, are smaller, and more portable nuclear weapons created by the United States beginning in 1954.  These initial Atomic Demolition Munitions required large teams of trained soldiers and still weighed hundreds of pounds.  The United States of America’s nuclear weapons developers were encouraging of the Military’s desire for tactical nuclear weapons.  The President of one of these nuclear weapons developers, James McRae of Sandia Corporation, was among those inspiring the further development of tactical nuclear weapons, asserting: “greater emphasis should be placed on small atomic weapons”.  The development of the Davy Crocket nuclear device, an atomic weapon with a sub-kiloton energy yield that can be transported on the back of a jeep, served as a pre-cursor to the eventual final product foreseen by the Military, the Mk-54 Special Atomic Demolition Munition.  The Davy Crocket’s lightweight Mark-54 composition was encouraging to the further production and advancement of smaller Special Atomic Demolition Munitions, such as the W-54 version which could be manned by a single trained soldier. <SEP> Roy Allison Roberts (1887 - February 23, 1967) was a managing editor, president, editor and general manager of "The Kansas City Star" who guided the paper during its influential period during the Presidencies of Harry S. Truman and Dwight D. Eisenhower. <SEP>  He is also the only world leader to have ever used nuclear weapons in war, desegregated the U.S. Armed Forces, supported a newly independent Israel, and was a founder of the United Nations. Harry S. Truman (May 8, 1884December 26, 1972) was the 33rd President of the United States (1945–53), assuming that office upon the death of Franklin D. Roosevelt during the waning months of World War II.  He is known for launching the Marshall Plan to rebuild the economy of Western Europe, for leading the Cold War against Soviet and Chinese communism by establishing the Truman Doctrine and NATO, and for intervening in the Korean War.  In domestic affairs, he was a moderate Democrat whose liberal proposals were a continuation of Franklin Roosevelt's New Deal, but the conservative-dominated Congress blocked most of them.  He used the veto power 180 times, more than any president since then, and saw 12 overridden by Congress; only Grover Cleveland and Franklin D. Roosevelt used the veto so often, and only Gerald Ford and Andrew Johnson saw so many veto overrides.