Caution grips Asian shares as Fed events loom large

SYDNEY (Reuters) - Asian shares flatlined on Wednesday as worries about global recession and endless trade wars wrestled with hopes for more monetary and fiscal stimulus to keep growth going.Much depends on what the Federal Reserve does with U.S. interest rates, making markets hyper-sensitive to the minutes - due later on Wednesday - of its most recent meeting. Traders are also awaiting the central bank's annual Jackson Hole seminar later this week and a Group of Seven summit this weekend for..