Pfizer Inc's experimental COVID-19 vaccine was more than 90% effective based on initial trial results, the company said on Monday, a major victory in the fight against a pandemic that has killed over a million people and battered the world's economy. Experts welcomed the first successful...

US President-elect Joe Biden Monday hailed as a cause for "hope" the news that a Covid-19 vaccine developed by Pfizer and BioNTech was 90 percent effective -- but warned of a long battle still ahead. "I congratulate the brilliant women and men who helped produce this breakthrough and to...

Armenia reported heavy fighting around a strategic city in Nagorno-Karabakh Monday, a day after Azerbaijan said it had captured it in a major breakthrough after six weeks of bloodshed. People celebrated in the streets of Azerbaijan's capital, Baku, Sunday when President Ilham Aliyev...

Argentinians took to the streets Sunday to protest against the administration of President Alberto Fernandez.  The demonstrators, who gathered around the obelisk in the central square in the capital Buenos Aires, chanted for “freedom, justice and the constitution.” Drivers passing...