Amazon workers near 5 major US cities go on strike ahead of holiday rush

Days before Christmas, Teamsters union workers have started striking at Amazon fulfillment centers in several locations, including New York and California. Teamsters President Sean O'Brien stated that Amazon is responsible for any Christmas gift delays, as they ignored the union's deadline to negotiate.

How does the Teamsters union characterize Amazon's handling of the situation?

What was Amazon's response to the Teamsters' deadline according to the statement?