This week’s Friday Focus podcast kicks off with reactions to the first U.S. presidential debate between Joe Biden and Donald Trump — where a halting performance by Biden has renewed discussions over his age and whether he should drop out so a different Democrat can take on Trump. Rudyard Griffiths and Janice Stein unpack the debate and its implications for the world. And in the second half of the podcast, available exclusively to our Munk donors, Rudyard and Janice discuss another leader with question marks about his future: Canadian Prime Minister Justin Trudeau, whose party just lost a very safe seat in a byelection.