TORONTO — At a conference bookended by speeches from former President Barack Obama and Canadian Prime Minister Mark Carney, the leading lights of the global center-left gathered to consider their fate. The Global Progress Action Summit was billed as a “progressive version of CPAC,” the right-wing conference that has become a premier gathering for populist conservatives from around the world. And indeed, the conference was preoccupied with its right-mirror image — with speakers admitting that the far right had outmaneuvered them in the past, and advancing ideas for how to blunt its seemingly persistent appeal going forward. Key takeaways Vox attended a recent conference for the international left, featuring people like former President Barack Obama and Canadian Prime Minister Mark Carney, to try and understand how liberals are responding to the far right’s persistent political power.…