The Group of 20 Summit, hosted by India earlier this month, couldn’t have gone better for Prime Minister Narendra Modi. His pledge to make the African Union a permanent member became reality. And under his leadership, the fractured grouping signed off on a final statement. It was seen as a foreign policy triumph for Modi and set the tone for India as a great emerging power.

Foreign Minister Subrahmanyam Jaishankar was expected to seize on India’s geopolitical high in his speech at the United Nations on Tuesday. But circumstances have changed — quite abruptly — and India comes to the General Assembly podium with a diplomatic mess on its hands.

On Monday, Canadian leader Justin Trudeau made a shocking claim: India may have been involved in the killing of a Sikh Canadian citizen in a Vancouver suburb in June.