World leaders open their annual debate at the United Nations on Tuesday, eager to hear US President Donald Trump deliver his maiden address amid global anxiety over North Korea and Iran.

The family of former White House national security advisor Michael Flynn has launched a defense fund to raise money for mounting legal costs in the sprawling Russia election interference probe.

Sean Spicer, the former White House press secretary whose full-throated defense of Donald Trump earned him derision on television, delighted his former tormentors in a surprise appearance at Sunday's Emmys.

The US flew four stealth fighter jets and two bombers over the Korean peninsula on Monday in a show of force after North Korea's latest nuclear and missile tests, South Korea's defence ministry said.

After a succession of mixed messages on the US stance on climate change, Secretary of State Rex Tillerson said Sunday that the Trump administration was seeking "ways in which we can work with partners in the Paris climate accord."

Washington says at least 16 employees at its Havana embassy -- which fully reopened in 2015 after a half-century breakdown in diplomatic relations -- were injured in a series of incidents that began last year.

Donald Trump let loose on Twitter Sunday with a shoot-from-the-hip volley of posts referring to North Korea's leader Kim Jong-Un as "Rocket Man" -- and picturing himself taking out Hillary Clinton with a golf ball.

No final deal has been reached, but Trump's agreement to work with Democrats to find a way for the 700,000 immigrants known as "Dreamers" to remain in the country legally has roiled his political base.

Donald Trump signed into law a Congressional resolution condemning white supremacists on Thursday, after lawmakers maneuvered the president into backing a text triggered by his equivocal response to racial violence in Charlottesville, Virginia.

The UN Security Council unanimously imposed on Monday an eighth set of sanctions on North Korea after its latest nuclear test, banning it from trading in textiles and restricting oil imports.

US President Donald Trump on Thursday announced he intends to visit China, Japan and South Korea later this year, a blockbuster maiden presidential visit to Asia.

President Donald Trump is to visit storm-ravaged Florida on Thursday as authorities investigate the deaths of eight residents of a nursing home that lost power when Hurricane Irma whipped through the region.