Major U.S. allies have dropped alarming clues about what lies ahead as President Donald Trump prepares to deliver a prime-time address on the situation in Iran. Trump will speak to the nation at 9 p.m.

The "Late Night" host praised the president on April Fool's Day.

Trump's meandering speech did little to assuage U.S. allies and world markets concerned about the conflict's ongoing disruptions to the global oil supply.

President Trump addressed the war in Iran, promising a swift end, while his approval ratings show a mixed picture.

President Donald Trump is escalating his feud with American music legend Bruce Springsteen, a longtime critic of the president, hours after delivering a prime-time address in which he telegraphed plans to continue hitting Iran over the next couple weeks.

The president’s pledge to hit Iran ‘extremely hard’ sends the U.S. oil benchmark flying into holiday weekend.

Rep. Seth Moulton summed up why he can't quite spot how Trump intends to proceed in the Middle East.

CNBC's Pippa Stevens talks the impact of Pres. Trump's primetime address on oil prices. Got a confidential news tip? We want to hear from you. Sign up for free newsletters and get more CNBC delivered to your inbox Get this delivered to your inbox,