The evolving confrontation with Israel and the United States places the Islamic Republic of Iran at a critical inflection point. Tehran faces choices that range from limited negotiation and strategic restraint to escalation and eventual collapse.

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.

President Trump did not rule out U.S. military intervention on behalf of Israel, saying, “Nobody knows what I’m going to do.”