Facebook's Libra cryptocurrency faces new hurdle from G7 nations

LONDON/WASHINGTON (Reuters) - Facebook's plans to launch its Libra cryptocurrency faced a new hurdle on Thursday when the Group of Seven wealthy nations said such "stablecoins" should not be allowed to launch until the profound international risks they pose are addressed.When launched on a wide scale, stablecoins - digital currencies usually backed by traditional money and other assets - could threaten the world's monetary system and financial stability, a G7 working group said in a report to..