Investing.com - The dollar pressured Wednesday as heightened geopolitical concerns sparked a flight to safety.
Fears of a U.S. strike against North Korea have grown as the U.S. deploys warships close to Korean peninsula.
The dollar index was off 0.07% at 03:00 ET at 100.56.
President Trump tweeted Tuesday that North Korea was looking for "trouble" in its arms program.
Trump and his Chinese counterpart Xi Jinping have spoken by phone about the situation, with Xi urging a peaceful solution.
Secretary of State Rex Tillerson is in Moscow after U.S. air strikes against Syria, which is backed by Russia.
Geopolitical concerns boosted safe-haven buying of the yen. The dollar later steadied to trade up 0.01% at ¥109.63.
Longer-dated U.S. Treasury yields also fell on a flight to safety as the 10-year dipped below 2.3%
The euro was steady above $1.06 as the first round of the French presidential election nears.