PRESIDENTIAL RACE

HOUSTON - Brawling from the get-go, a fiery Marco Rubio goes hard after Donald Trump in a Republican presidential debate, attacking the front-runner's position on immigration, his privileged background, his speaking style and more.

MEXICO-US

MEXICO CITY - Vice President Joe Biden says some U.S. campaign rhetoric about Mexico and immigrants has been "dangerous, damaging and incredibly ill-advised" and is out of step with most Americans' attitudes. 

SHOOTING-KANSAS BUSINESS

HESSTON, Kansas - A series of shootings at a business, its parking lot and two streets nearby leave four people including the gunman dead, a sheriff in south-central Kansas says. 

ISLAMIC STATE-CYBERWAR

WASHINGTON - The U.S. military has launched a newly aggressive campaign of cyberattacks against Islamic State militants, targeting the group's abilities to use social media and the Internet to recruit fighters and inspire followers, U.S. officials told The Associated Press. 

UNITED STATES CHINA PHILIPPINES

WASHINGTON - China accuses the U.S.-allied Philippines of "political provocation" in seeking international arbitration over territorial claims in the South China Sea. Chinese Foreign Minister Wang Yi said the decision by Philippine leaders to lodge a case with a tribunal in The Hague was "irresponsible to the Filipino people and the future of the Philippines."

PERU-ILLEGAL MINING-PHOTO GALLERY

LA PAMPA, Peru - In one of the biggest raids yet in Peru's crackdown on wildcat mining, police and soldiers destroy scores of illegal gold mining camps and target about three dozen brothels. 

ZIKA-MICROCEPHALY-SKEPTICS

RIO DE JANEIRO - Often drowned out by the warnings and fear surrounding Zika, some medical professionals say Brazil and international health officials have prematurely declared a link between the virus and what appears to be a surge in birth defects.