Nancy Pelosi has beacked an impeachment inquiry into Donald Trump. Photograph: Getty Images

Speaker Nancy Pelosi announced on Tuesday that the House would launch a formal impeachment inquiry in response to the dispute over US president Donald(...)

US president Donald Trump: ‘Denmark carries Greenland at  great loss and strategically for the United States it would be very nice’. Photograph: Anna Moneymaker/New York Times

Donald Trump has confirmed he is considering an attempt to buy Greenland for strategic reasons, though he said the idea was “not number one on the bur(...)

Barack Obama meets Donald Trump as he is sworn in as US  president: Mr Trump talks about the US as a self-interested state among self-interested states, unique in its power but not in its existential purpose, which is to survive and prosper. Photograph: Tom Williams/CQ Roll Call

Not since Andrew Johnson followed Abraham Lincoln have successive US presidents contrasted more vividly than Barack Obama and Donald Trump. Their han(...)

US president Donald Trump salutes supporters after speaking at a political rally in Charleston, West Virginia, on Tuesday. Photograph: Mandel Ngan/AFP/Getty Images

In June, US president Donald Trump claimed “an absolute right” to pardon himself. What was then a matter of scholarly conjecture is now a question of (...)

John Morrissey: born February 5th 1831. Height 6 feet. Weight 170 lbs. Image:   United States Library of Congress/Wikicommons

This weekly series for Irish Times Abroad profiles an Extraordinary Emigrant from Irish history, based on entries from the Royal Irish Academy’s Dicti(...)

‘There is a real and urgent problem here that is escalating. It runs so deep it’s inescapable. It’s in schools, at the voting booth, in housing, in police stations, on the streets, in the White House… nowhere is exempt from the insidious racism that keeps millions of Americans from living full and free lives.’

Dr Maya Angelou once said, “When people show you who they are, believe them”. On Thursday, we were shown something, and we ought to sit up and pay att(...)

Barack Obama as he is sworn in on January 20th, 2009, as US president, on the same Bible used to swear in Abraham Lincoln. Photograph: Tim Sloan/AFP/Getty Abraham Lincoln: the 16th president of the United States

Donald J Trump will on Friday ascend the steps of Capitol Hill and utter an oath first sworn by George Washington in 1789. “I do solemnly swear that (...)

 Valencia  announced they have reached an agreement to sign striker Alvaro Negredo on loan from Manchester City with a clause making the deal permanent at the end of the season.  Photograph: Jeff Holmes/PA Wire.

ArsenalPlayers in: Alexis Sánchez (Barcelona, £30m), Mathieu Debuchy (Newcastle, £12m), David Ospina (Nice, undisclosed), Calum Chambers (Southampton,(...)