Andrea Mitchell

As Gulf state leaders gathered in a Riyadh hotel this week to discuss the growing Middle East war, strikes from Tehran blasted outside.

President Donald Trump dropped his push for U.S. allies to protect the Strait of Hormuz from Iranian threats — an about-face that came just one day after he called upon nations to “get involved” so oil tankers can safely navigate the crucial shipping lane.

Iran’s decision to retaliate across the Middle East has amounted to a strategic mistake, isolating Tehran and angering neighbors, sources tell NBC News.

The United States and Iran met in Geneva on Thursday for high-stakes nuclear talks as President Donald Trump pressures Tehran with the threat of military action

WASHINGTON — Although weakened and facing a domestic crisis, Iran’s regime still has substantial firepower that could inflict damage on American interests and allies in the region, disrupt the global economy and trigger a protracted conflict in response to a U.S. military attack, according to former U.S. officials, foreign diplomats and regional analysts

WASHINGTON — The Defense Department is sending a large array of additional weaponry to the Middle East, including more warships, air defenses and submarines, in preparation for a possible military strike on Iran if President Donald Trump makes that decision, according to U.S. officials and information from public tracking.

In today’s edition, Andrea Mitchell lays out the stakes for the United States and Iran after a round of nuclear talks.

Secretary of State Marco Rubio spoke at the Munich Security Conference on Saturday in an apparent effort to paper over cracks in the relationship between the U.S. and Europe, though foreign diplomats were less convinced that real change would follow

Last year's gathering of top security figures set the tone for a growing rift between the U.S. and Europe.

In today’s edition, Scott Bland breaks down the big takeaways from the latest NBC News Decision Desk Poll on immigration and Trump's approval rating.

Top Trump administration officials do not yet have clear guidance on what President Donald Trump would hope to accomplish with military action in Iran as U.S. and Iranian officials were meeting Friday to try to avoid a war, according to two U.S. officials.