US President Donald Trump has issued a scathing rebuke to former Russian President Dmitry Medvedev, warning him to "watch his words." Writing on social media, Medvedev warned that any ultimatums from Trump would be considered " a threat and a step toward war". He then warned Trump: "Don't go down the Sleepy Joe road."

Iran, which denies seeking to develop a nuclear weapon, has insisted it will not give up domestic uranium enrichment despite the bombings of three nuclear sites. Trump told reporters that Iran has been sending out "nasty signals" and any effort to restart its nuclear program will be immediately quashed.

Analyzing Iran's nuclear program, Donald Trump's warnings, and the resulting geopolitical tensions involving Russia, Ukraine, and the Middle East.