The Chinese telecoms firm Huawei is suing the United States for excluding it from government contracts.
The firm argues a law passed last year is unconstitutional.
In a statement on Thursday, the company said it had filed a lawsuit in the district court in Texas, calling for the ban to be overturned.
From Washington, Daniel Ryntjes reports:
Tanzania's Hassan declared landslide winner in election marred by violence
Tanzania's electoral commission declared on Saturday that President Samia Suluhu Hassan had won, with nearly 98 per cent of the votes, an election that set off violent protests across the country this week.
Vietnam's ancient town Hoi An works to restore tourism after devastating floods
Residents of Vietnam's UNESCO-listed ancient town of Hoi An began cleaning up on Saturday as floodwaters receded after days of torrential rain that caused deadly flooding and widespread damage across the central region.
Indian temple stampede kills nine, injures several
A stampede at a temple in India's southern state of Andhra Pradesh killed at least nine people early on Saturday, government officials said, with several injured.
Turkey to host Gaza meeting amid ceasefire concerns
Foreign ministers of some Muslim countries will meet in Istanbul on Monday to discuss the Gaza ceasefire and next steps there, Turkish Foreign Minister Hakan Fidan said on Friday, voicing concern over whether the ceasefire will continue.
Tanzania opposition says hundreds killed in vote protests
Tanzania's main opposition party said on Friday hundreds of people had been killed in protests over elections across the country this week, as the government said it was restoring order after "isolated incidents".
