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European government bond yields were at near 1-1/2 year highs on Thursday and the dollar clung close to six week peaks on a combination of a better global economic outlook, nervousness about Syria and pending central bank meetings.
Russia and China, meanwhile, both warned the US ahead of the G23 meeting in St Petersburg that the end of the Federal Reserve's bond-buying programme could have a profound impact on the global economy.
The European Central Bank and Bank of England were both expected to leave interest rates unchanged, but investors were looking for statements reiterating pledges to keep rates low given recent stronger economic data.
ECB President Mario Draghi "is going to want talk down the prospects of recovery a little bit and get people's feet on the ground," said Will Hobbs, head of equities strategy at Barclays Wealth.
European money market rates have been moving higher recently in response to stronger economic data and on expectations the Federal Reserve is set to begin unwinding its stimulus, possibly as soon as later this month.
Analysts see little options for the bank other than just maintaining a soft tone in communication, sending German 10-year bond yields have risen to 1-1/2 year highs of 1.981%.
Earlier the Bank of Japan voted unanimously to maintain its monetary stimulus, while declaring the world's third-largest economy was on a recovery path, sending the yen briefly above 100 to the dollar, a six week low.
In the emerging markets India's new RBI began his tenure in spectacular fashion by unveiling measures to support the currency and the banking sector that sent the Nifty up 3.3% and boosting the rupee.
The rupee rose to as high as 65.53 per US dollar, pulling well away from a record low around 68.85 set last week.
The gain in Indian stocks and a slight rise in Tokyo's shares after the BOJ decision helped lifted Asia equity prices by 0.6%, to near a three week high.
European share markets were up 0.5% in early trade, gaining ground for the second day in a row and hitting its highest level since August 27.
"People are waiting for cues from the central banks, and there is just no real trend on the market at the moment," said Guillaume Dumans, co-head of research firm 2Bremans.
The euro last traded at $1.3185, down slightly against the stronger dollar and not far from a six-week low of
$1.3138.
MSCI world equity index was up 0.1% following a second day of gains on Wall Street spurred by another set of upbeat US data, which included the strongest monthly rise in car sales during August since October 2007.
"Strong car sales in the US again lifted market confidence in the economy, and lifted expectations that the US Federal Reserve will start cutting back its stimulus this month," said Isao Kubo, an equity strategist at Nissay Asset Management.
SYRIA ACTION
Markets remained cautious about Syria as a possible US military strike moved one step closer after a Senate committee voted in favour of action, clearing the way for a vote in the full Senate, likely next week.
The possible military strike against Syria in reaction to its alleged use of chemical weapons and the Fed's decision to reduce its stimulus were expected to dominate discussions at a meeting of leaders from the Group of 20 developed and developing economies in St Petersburg.
In a note prepared for the meeting the IMF warned that emerging countries were particularly vulnerable to a tightening of US monetary policy.
It urged strengthened global action to revitalise growth and better manage risks, adding some downside risks have become more prominent.
US President Barack Obama meanwhile was expected to use the meeting to win international backing for a military strike against Syria and this was keeping a floor under oil markets
Brent crude rose 56 cents to $115.47, while US oil was up 64 cents to $107.97.
