Republican frustration with Donald Trump has mounted following a series of startling statements from the nominee, including his refusal to endorse House Speaker Paul Ryan’s re-election.

Republican presidential nominee Donald Trump has warned countries like France that he says are compromised by terrorism may be subjected to the "extreme vetting" he proposes to deter attacks in the US.

The estate of George Harrison has complained about the use of his music at the Republican National Convention.

A night after being booed off the Republican National Convention stage, Texas Senator Ted Cruz remained defiant about Donald Trump, saying he is not a “servile puppy dog” and vowing not to support anyone who wages personal attacks against his family.

Donald Trump once promised a “showbiz” convention, packed with flash, celebrities, and a “winner’s night” featuring sports stars and champion coaches.

The Republican National Convention is taking place this week in Cleveland, Ohio.

Dissident delegates making a last-ditch attempt to prevent Donald Trump's US presidential candidacy at the Republican National Convention say they will try forcing a state-by-state vote on the rules governing the gathering.

Good afternoon. Here’s all the news you need to know this lunchtime.

Twitter shares yesterday slipped after analysts at two firms downgraded the stock, citing a lack of confidence in the company’s direction and ability to capitalise on new products.

What the world would look like under President Donald Trump? By Matthew Cooper

Gene Hackman had given clothes, money and lifts to a homeless man whom he slapped this week after the man became aggressive towards the Oscar-winning actor and his wife, according to a police report detailing the incident in New Mexico.

Superstorm Sandy’s mayhem is upending the final week of the presidential race, with US president Barack Obama calling off another of the waning days left to campaign and Republican Mitt Romney struggling to strike the right tone as he tries to close the deal with voters.

Superstorm Sandy disrupted the US presidential race as President Barack Obama and Republican rival Mitt Romney both cancelled campaign events.

Republicans lashed out at President Barack Obama and his administration chiefs over their evolving description of the deadly September 11 attack on the US consulate in Libya.

US presidential hopeful Mitt Romney has a fight on his hands if he wants to keep using Thin Lizzy’s music in his campaign.

Clint Eastwood has broken his silence on his infamous speech at the Republican National Convention, saying President Barack Obama is “the greatest hoax ever perpetrated on the American people”.

Clint Eastwood says he achieved what he sought to do when he appeared at the Republican National Convention last week and talked to an empty chair that he said represented President Barack Obama. The actor’s speech was widely mocked.

US President Barack Obama last night ampooned the Republican National Convention as better suited to an era of black-and-white television as he declared that Mitt Romney “did not offer a single new idea” to fix the economy.

Clint Eastwood earned plenty of bad reviews for his latest performance: A bizarre, rambling endorsement of Mitt Romney.

HURRICANE Isaac had an elemental impact on the Republican National Convention last week. The ‘Grand Old Party’ (GOP) was gathered in Tampa, Florida, to select Mitt Romney as presidential candidate.

Actor and film director Clint Eastwood today earned plenty of bad reviews for his latest performance – a bizarre, rambling endorsement of Mitt Romney.

A black camerawoman who works for CNN spoke today of a race-hate attack at the Republican National Convention by two people who hurled peanuts at her and said: “This is what we feed animals.”

Barack Obama has failed to deliver on his promise of hope and change and it is time for new leadership in the White House, Mitt Romney told America today, in the most critical speech in his presidential campaign.

Paul Ryan, a hero to conservatives and lightning rod for Democrats, accepted the Republican nomination as Mitt Romney’s vice-presidential running mate, saying the moment for President Barack Obama’s Democrats “came and went”.

US vice-presidential wannabe Paul Ryan speaks in rhetoric and glosses over essential facts, writes Andy Sullivan

Four years ago, she was the star of the Republican National Convention. Now Sarah Palin is upset after interviews with her were dropped from the television network where she is working.

Paul Ryan, a hero to conservatives and lightning rod for Democrats, accepted the Republican nomination as Mitt Romney's vice presidential running mate today, saying the moment for President Barack Obama's Democrats "came and went".

Hurricane Isaac sidestepped New Orleans, sending the worst of its howling wind and heavy rain into a cluster of rural fishing villages with few defences against the slow-moving storm that could bring days of unending rain.

Tropical Storm Isaac continued to lash New Orleans with heavy rain today despite being downgraded, as residents in cars and homes were stranded exactly seven years after Hurricane Katrina devastated the city.

Hurricane Isaac has swept into New Orleans exactly seven years after the devastating Katrina, stranding people in cars and homes as it pushed flood waters over defences in one rural area.

More than 500,000 people have lost power as Hurricane Isaac moves through south-east Louisiana, bringing torrential rain and flooding.

Hurricane Isaac has lashed the Louisiana coast and is heading for a shuttered New Orleans, sending floodwaters surging and unleashing fierce winds.

Hurricane Isaac made landfall in south-east Louisiana today, with winds of nearly 80mph.

Republicans bestowed their presidential nomination on Mitt Romney, turning to the former Massachusetts governor and multi-millionaire businessman to drive Barack Obama from the White House and usher in a new era of small-government conservatism.

Isaac turned into a full-blown category 1 hurricane today as it rolled over the Gulf of Mexico toward Louisiana, where residents in four states left boarded-up homes and New Orleans waited nervously behind flood-defence levees strengthened after the devastating Katrina struck exactly seven years ago.

Tropical storm Isaac was on the verge of becoming a full-blown hurricane as it rolled over the Gulf of Mexico toward Louisiana.

The storm-shortened Republican National Convention which begins in earnest today will be a three-day coronation of Mitt Romney as the party’s rival to President Barack Obama.