Horton, who took silver behind Sun at the weekend, refused to step onto the top step of the podium for photos after the medal ceremony in Gwangju, as doping allegations swirl around Sun.
Sudanese activists and officials say a diplomatic push by the US and its Arab allies was key to ending a weekslong standoff that raised fears of all-out civil war.
Police arrested six people during a demonstration in one of Hong Kong’s most popular tourist areas on Sunday, where thousands of protesters sought to raise awareness among mainland Chinese visitors
Students at Brisbane’s University of Queensland gathered this week to show support for demonstrations in Hong Kong led by pro-democracy activists who object to what they see as Beijing
Demonstrators gathered in major cities under the slogan "defending the peace" to denounce the deaths. 462 campaigners have been killed since 2016, according to the country's ombudsman.
The "Justice First" marches were called by the Sudanese Professionals' Association, which has been spearheading the protests since December.
Sheung Shui boasts dozens of pharmacies and cosmetic stores that are hugely popular with mainland merchants who snap up goods in Hong Kong — where there is no sales tax — and resell them across the border.
Hundreds of Sudanese demonstrators marched in the capital on Thursday towards a prominent square to honour comrades killed in the months-long protest movement that has rocked the northeast African country.
Sudanese protest leaders called for a one-day nationwide “civil disobedience” campaign on July 14, in an announcement on Monday a day after they organised mass protests against the ruling generals that rocked the country.