Russia said the use of a tactical nuclear weapon by the U.S. in Iran would be "catastrophic" after a report that it had not been ruled out as an option for President Donald Trump, who is considering joining Israel's strikes.

As Trump considers joining the war in the Middle East, Iran’s ally says there could be potentially perilous consequences for the world.

Tensions in the Middle East are reaching dangerous new heights. After Israel launched fresh missile strikes on Iran's nuclear facilities, Iran struck back—calling it a declaration of war. Now, former President Donald Trump has reportedly approved plans for a potential US attack on Iran,