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.

Japan and the U.S. may unveil a joint policy next week to defend the yen after record interventions in April and May.

TOKYO, Aug 2 — Washington and Tokyo jointly intervened to shore up the Japanese yen for the first time in nearly 30 years after the currency sank to its weakest level in…