Group 1 - The core viewpoint of the article is that President Trump is considering significant military actions against Iran, including airstrikes on Iranian leaders and nuclear facilities, although no final decision has been made [1] - The deployment of the USS Abraham Lincoln strike group has expanded the range of military options available to the U.S. [1] - The U.S. military is deploying defense systems, including the Patriot missile defense system, to protect American forces in the Middle East from potential Iranian retaliation [1] Group 2 - The U.S. plans to deploy one or more THAAD missile defense systems in the Middle East [1] - Negotiations between the U.S. and Iran regarding limitations on Iran's nuclear program and ballistic missile production have not made progress [1]