Head of Argentina's central bank quits after three months

Peso tumbles as Luis Caputo resigns amid ongoing talks for emergency IMF fundingThe head of the Argentinian central bank has resigned after just three months in charge and while the country is negotiating emergency financial support from the International Monetary Fund.In the latest twist of the economic crisis, Luis Caputo resigned unexpectedly on Tuesday, sending the peso tumbling on the foreign exchanges. The currency had already dropped by more than 50% this year amid fears about a recession