Iran's envoy wanted of "irreversible consequences" if the U.N. fails to end the war in a letter obtained by Newsweek.

As the attacks by Iran and Israel continue into their sixth day, here's a look at what we know about the conflict, and if the US will deploy troops.

Shapiro served as Deputy Assistant Secretary of Defense for the Middle East until January—charged with, among other things, considering scenarios in which tensions between Israel and Iran escalated into all-out war and preparing U.