Trump is curious as to why Iran has not yet "capitulated" and agreed to curb its nuclear programme, as Washington builds up its military capability in the Middle East, Trump's special envoy Steve Witkoff said.

Iran agreed a secret 500 million euro ($589 million) arms deal with Russia to acquire thousands of advanced shoulder-fired missiles, the Financial Times reported on Sunday.

China and Russia have forged closer ties with Tehran but have shown little willingness to provide military aid in a conflict with the U.S.

The gambit was successful. At least twice, the president weighed ordering an attack on Iran, only to be dissuaded by aides from moving forward. But America now appears to be on the brink of war with Iran again. And this time, instead of acting as a deterrent, the Pentagon’s war plans are being used to draw up options for the president to consider.

President Trump is pressuring Iran to either curtail its nuclear program or face military strikes, after Iran amassed a large stockpile of highly enriched uranium. Here's what to know.

Tensions between the United States and Iran have caused an increase in oil prices across the country and here in New Jersey, according to experts.

The U.S. and Iran are signaling they're prepared for war if talks on Tehran’s nuclear program fizzle out, as a second U.S. aircraft carrier nears the Middle East.

President Trump has one bright red line for Iran's nuclear program and some areas of flexibility as he weighs military strikes or a possible deal in the coming days.

As the United States continues a significant military buildup in the Middle East, Iran has taken steps to signal its readiness for war, including fortifying its nuclear sites and rebuilding missile production facilities.