In rallying global arms supplies and asking Congress for $33 billion more to support Ukraine, Washington is choosing to ignore Vladimir Putin's threats to use nuclear arms, and instead is openly testing the Russian leader's limits.
After the United States brought 40 countries to a US base in Germany last week to discuss aid for Ukraine's war with Russia, Putin on Wednesday threatened a "lightning fast" response if there is any direct intervention by outsiders on Kyiv's behalf, AFP said.
