US President Donald Trump said Wednesday he had received a "great letter" from Kim Jong Un, after the North Korean leader warned Pyongyang may change its approach to nuclear talks if Washington persists with sanctions.

Four billion miles from the sun floats Ultima Thule, an icy celestial body that Nasa scientists announced Wednesday is aptly shaped like a giant snowman.

Acting US Defense Secretary Patrick Shanahan's first full day at the Pentagon's helm was overshadowed Wednesday when President Donald Trump attacked his predecessor Jim Mattis.

Democrats were set to take over the US House of Representatives yesterday, ushering in a new era of divided government in Washington with the goal of checking Donald Trump's turbulent presidency.

US President Donald Trump has offered a rather stark take on the situation in war-wracked Syria, summing it up in two words -- "sand and death" -- while remaining vague about the timing of the withdrawal of US troops.

Incoming Senator Mitt Romney issued harsh criticism of President Donald Trump on Tuesday, saying he "has not risen to the mantle of

President Donald Trump is looking forward to another summit with Kim Jong Un, he said Tuesday, after the North Korean leader

Democratic Senator Elizabeth Warren entered the 2020 race for the White House on Monday. The 69-year-old progressive announced she was launching an exploratory committee for president, becoming the first major candidate in what is set to be an extraordinarily crowded Democratic primary, united by a singular focus on unseating the Republican Trump.

The United States and Israel have officially quit the United Nations Educational, Scientific and Cultural Organization (Unesco) at the stroke of midnight on New Year's Day, the culmination of a process triggered more than a year ago.

Defense Secretary Jim Mattis bade farewell to the Pentagon on Monday, telling the US military to "hold fast" after he quit over a series of fundamental differences with President Donald Trump.

Nasa rang in the New Year yesterday with a historic flyby of the farthest, and quite possibly the oldest, cosmic body ever explored by humankind -- a tiny, distant world called Ultima Thule -- in the hopes of learning more about how planets took shape.

Senator Elizabeth Warren on Monday took the first major step toward launching a widely anticipated campaign for the presidency, hoping her reputation as a populist fighter can help her navigate a Democratic field that could include nearly two dozen candidates.

Democrats in the US House of Representatives plan to vote on a funding package to end the 10-day-old partial US government shutdown, without providing the $5 billion President Donald Trump has demands for a US-Mexico border wall.

A senior Republican US senator said he emerged from a White House meeting with President Donald Trump on Sunday reassured that Trump is committed to defeating Islamic State even as he plans to withdraw American troops from Syria.

US President Donald Trump said on Twitter that he had a "long and very good call" with Chinese President Xi Jinping and that a possible trade deal between the United States and China was progressing well.

At least six deaths were attributed to severe weather in the US as heavy snow and high winds snarled air and ground transportation during a busy holiday travel period.

US commanders planning for the withdrawal of US troops from Syria are recommending that Kurdish fighters battling Islamic State be allowed to keep US-supplied weapons, four US officials said, a move that would likely anger Nato ally Turkey.

President Donald Trump yesterday threatened to seal off the US-Mexico border "entirely" if Congress does not approve billions of dollars in funding for a wall.

Former First Lady Hillary Clinton's 17-year run as the woman Americans admire most is over. Another former First Lady, Michelle Obama, deposes Clinton as America's most admired woman, according to a Gallup poll.

President Donald Trump used a lightning visit to Iraq -- his first with US troops in a conflict zone since being elected -- to defend the withdrawal from Syria and declare an end to America's role as the global "policeman."