Much 'to do' about yen intervention

August 3 : What matters in U.S. and global markets todayBy Mike Dolan, Editor-at-Large, Finance and MarketsJapan's yen strengthened further on Monday as the U.S. and Japanese governments confirmed their first joint intervention since 2011 to prop up the ailing currency from recent 40-year lows. Both the timing and impact of the move are being examined closely. I'll get into that and more below.But first, listen to the latest episode of the Morning Bid daily podcast, where we discuss the historic intervention, U.S. corporate earnings growth and the latest on Iran.Subscribe to hear Reuters journalists discuss the biggest news in markets and finance seven days a week.MUCH 'TO DO' ABOUT YEN INTERVENTIONThere are many questions about the timing of Friday's joint yen intervention. The Bank of Ja