Xinhua world news summary at 0830 GMT, April 5

WASHINGTON -- Chinese Ambassador to the United States Cui Tiankai on Wednesday urged Washington to abandon its "unilateral and protectionist practices" and terminate the Section 301 investigation as early as possible.

Cui made the remarks while meeting with U.S. Acting Secretary of State John J. Sullivan. (US-China-Trade)

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WASHINGTON -- U.S. President Donald Trump signed a proclamation on Wednesday, authorizing the deployment of the National Guard to the border with Mexico, citing a crisis situation.

"The situation at the border has now reached a point of crisis," Trump said in a memorandum to his secretaries of defense and homeland security and to his attorney general. (US-Trump-Border)

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BRASILIA -- Brazil's Supreme Federal Court judges voted early Thursday to reject former President Luiz Inacio Lula da Silva's plea to avoid prison.

After over 10 hours of session, there were six votes against the habeas corpus and five for it. The deciding vote was cast by court President Carmen Lucia Rocha. (Brazil-Lula-Corruption)

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WASHINGTON -- Facebook revealed Wednesday that outsiders took advantage of search tools on its platform, making it possible for them to collect personal information on most of its 2 billion users worldwide without the users' explicit permission.

Most of Facebook's 2 billion users may have had their personal data skimmed from the site by "malicious actors," the company said in a blog post by Chief Technology Officer Mike Schroepfer. (US-Facebook-Congress)

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SEOUL -- South Korea and the Democratic People's Republic of Korea (DPRK) on Thursday started a working-level talks to discuss security and protocol issues for the upcoming inter-Korean summit later this month, South Korea's presidential office said.

The meeting kicked off at around 10 a.m. local time (0100 GMT) on the South Korean side of the border village of Panmunjom, according to the Blue House of South Korea. (South Korea-DPRK-Talks) Enditem