The world's principal forum of global leaders risks marking its 10th anniversary with an identity crisis.
The debut Group of 20 leaders' summit was convened in 2008 to develop an international response to the financial crisis ripping through markets. Leaders attending the latest edition in Buenos Aires on Friday and Saturday face shared threats from trade disputes to migration and climate change — but are so lacking in common purpose that a blowup looks more likely than a collective response.
U.S. President Donald Trump's "America First" agenda is one obvious culprit for the breakdown in global solidarity, but far from the only one. Even as some leaders try to put on a show of unity, others are increasingly going it alone, whether Russian President Vladimir Putin's power play in Ukraine, Saudi Crown Prince Mohammad Bin Salman's business-as-usual approach after the murder of columnist Jamal Khashoggi, or even British leader Theresa May's dogged pursuit of Brexit.