The mother of a American Muslim soldier who was killed in Iraq criticised Republican Donald Trump as ignorant of Islam and of sacrifice after he questioned her silence during her husband's speech at the Democratic National Convention.
Ghazala Khan, whose son, Captain Humayun Khan, was killed in 2004, was angry at Mr Trump's implication she was silent because she, as a Muslim woman, had not been allowed to speak.
"When Donald Trump is talking about Islam, he is ignorant," she wrote in a Washington Post opinion piece.
"Donald Trump said he has made a lot of sacrifices. He doesn't know what the word sacrifice means."
In his speech at the Democratic Convention, Ghazala's husband Khizr Khan said that Mr Trump has "sacrificed nothing" for his country.
"Go look at the graves of brave patriots who died defending the United States of America," Mr Khan said to Mr Trump.
"You will see all faiths, genders and ethnicities. You have sacrificed nothing and no one."
Mr Trump brushed off Mr Khan's words in an interview with ABC News, stating that he thinks he has made "a lot of sacrifices".
"I work very, very hard. I've created thousands and thousands of jobs, tens of thousands of jobs, built great structures. I've had tremendous success. I think I've done a lot."
Mr Trump also questioned whether his rival, Hillary Clinton, had been behind Mr Khan's address, which he said he wrote with his wife Ghazala.
"Who wrote that? Did Hillary's script writers write it?" Mr Trump said in the interview.
"If you look at his wife, she was standing there. She had nothing to say," Mr Trump said, adding that "maybe she wasn't allowed to have anything to say."
Meanwhile, Mrs Clinton said Russian intelligence services hacked into Democratic National Committee computers and she accused Mr Trump of showing support for Russian President Vladimir Putin.
"We know that Russian intelligence services hacked into the DNC and we know that they arranged for a lot of those emails to be released and we know that Donald Trump has shown a very troubling willingness to back up Putin, to support Putin," Mrs Clinton said in an interview with Fox News Sunday.
The United States has not publicly accused Russia of being behind the hack of Democratic Party computers.
Cyber security experts and US officials, however, said they believed Russia engineered the release of the emails to influence the 8 November US presidential election.
Asked if she believed Mr Putin wanted Mr Trump to win the White House, Mrs Clinton said she was not going to jump to that conclusion.
"But I think laying out the facts raises serious issues about Russian interference in our elections, in our democracy," Mrs Clinton told Fox in the interview.
The United States would not tolerate that from any other country, especially one considered an adversary, she said.
