NORMAN SOLOMON – The outbreak of rhetorical hostilities between the White House and the Kremlin has heightened the urgent need for a summit between Joe Biden and Vladimir Putin. The spate of mutual denunciations is catnip for mass media and fuel for hardliners in both countries. But for the world at large, under the doomsday shadow of nuclear arsenals brandished by the United States and Russia, the latest developments are terribly ominous.