What Does the Statement of the Five Nuclear-Weapon States on Preventing Nuclear War Tell Us?

The Doomsday Clock has been sitting the past year at 100 seconds to midnight, the closest it has ever been to civilization-ending apocalypse. The United States has done little to quell doomsday apprehensions by ratcheting up tensions with China over Taiwan and its warships in the South China Sea, as well as with Russia over Ukraine, further NATO expansion, and missile deployment in eastern Europe. Will the first-ever Joint Statement of the Leaders of the Five Nuclear-Weapon States on Preventing Nuclear War and Avoiding Arms Races help to put a damper on any potential conflagration?