Oil price stability also key
US dollar also spiked
Moscow's relation with Beijing in focus
FTSE 100 was up for the month
Broke through 7,800 points
Volatility is a healthy development
Potential US dollar impact examined
First meeting for Powell
First monthly drop since March
'Do not rush in with eyes wide shut'
'More consistent upward move euro has seen in years'
Fearful of effect on US economy
Interesting times for investors
Concerns about delays to promised tax cuts