A short drive from Ukraine's southern border, hundreds of Russian troops guard a vast Soviet-era ammunition depot in Moldova's breakaway...

Nations have reached a historic agreement to protect the world's oceans following 10 years of negotiations. The High Seas Treaty...

Billionaire Bill Gates has said he would rather pay for vaccines than travelling to Mars, which he does not think...

The US is tracking a suspected Chinese surveillance balloon that has been spotted flying over sensitive sites in recent days....