G20 leaders will pledge to "spare no effort" in ensuring fair distribution of coronavirus vaccines worldwide, and reaffirm support for debt-laden poor countries, according to a draft communique seen by AFP Sunday.The group also struck a unified tone on supporting multilateral trade and the fight against climate change, but the closing document lacks details on many of the issues dominating the virtual summit.In a high-stakes webinar, leaders of the Group of 20 major powers have held a weekend of "digital diplomacy" to coordinate a response to the rampant pandemic and the worst economic recession in decades.The unusual format, in place of a real-life meeting that coronavirus restrictions made impossible, has produced some awkward.