usd,aussie and yen

The dollar moved further away from last week's four-year high against the yen on Monday after the United States said it would watch Japan to ensure its policies were not aimed at weakening its currency.

Commodity currencies also took a kicking after data showed the pace of Chinese growth stumbled in the first three months of the year, undershooting expectations.

The Aussie dollar slipped 0.6 percent to $1.0439 as industrial output in China, Australia's biggest export market, also disappointed. That took it further from a three-month high of $1.0583 marked on Thursday.

The Kiwi dollar lost 1.2 percent to $0.8486, stopping short of support at $0.8480, the 38.2 percent Fibonacci retracement of its March to April rally, above another level of support at $0.8449.

With the yen firming across the board, the dollar pared its earlier gains against the Japanese currency, sagging 0.2 percent to 98.15 yen, well shy of a four-year peak of 99.95 yen struck on trading platform EBS on Thursday, but above Friday's low of 98.08 yen. With the yen firming across the board, the dollar pared its earlier gains against the Japanese currency, sagging 0.2 percent to 98.15 yen, well shy of a four-year peak of 99.95 yen struck on trading platform EBS on Thursday, but above Friday's low of 98.08 yen.

On Friday, the U.S. Treasury Department said in a semi-annual report on currency practices on major trading partners that it would press Japan to adhere to the commitment it made in February as a member of the Group of Seven and Group of 20 nations to let the market determine exchange rates.

However, many analysts are betting that the yen's slide will resume, in light of the Bank of Japan's radical monetary policy overhaul that will pump about $1.4 trillion into the economy in less than two years, although investors may be unwilling to move before a two-day G20 meeting beginning on Thursday.

On Friday, data showed that U.S. retail sales fell 0.4 percent in March, suggesting the economy may have faltered at the end of the first quarter.

Strategists and market participants say the pace of the dollar's upward progress against the yen will largely be determined by whether the BOJ's massive asset-buying prompts Japanese investors to increase their overseas investments, and the extent to which those investments will be unhedged.

Currency speculators decreased their bets in favor of the dollar in the latest week, according to data from the Commodity Futures Trading Commission released on Friday.

One potentially dollar-supportive factor is the escalation of tension on the Korean peninsula, and any negative developments on that front could prompt investors to buy back the U.S. currency.

North Korea has threatened for weeks to attack the United States, South Korea and Japan since the United Nations imposed new sanctions on the rogue state in response to its latest nuclear arms test in February, fueling speculation it might launch another missile.