Related US aims to leverage Russia-Ukraine bloc against China China offers South Pacific nations security, free trade agreements Biden has an eye on China as he heads to South Korea, Japan In a long-awaited speech billed as the most comprehensive statement to date on China by President Joe Biden's administration, Blinken said that Beijing posed "the most serious long-term challenge to the international order" despite months of US focus on Russia's invasion of Ukraine. "China is the only country with both the intent to reshape the international order, and, increasingly, the economic, diplomatic, military and technological power to do it,"…