The U.S. dollar weakened on Monday as global investor sentiment improved following renewed optimism around a possible U.S.–Iran peace agreement. At the same time, Asian and major global currencies strengthened amid increased risk appetite in forex markets.

Trading activity remained relatively subdued due to public holidays in the United States, Hong Kong, and South Korea.

Dollar Index Falls as Global Currencies Strengthen

The U.S. dollar index (DXY), which measures the currency against a basket of major global currencies, declined 0.22% to 99.02.

Key currency movements included:

  • Dollar fell 0.18% against the yen to 158.92
  • Euro rose 0.31% to $1.1639
  • British pound increased 0.39% to $1.3482
  • Australian dollar gained 0.56% to $0.7167
  • New Zealand dollar rose 0.43% to $0.5875

The broad-based dollar weakness reflected shifting investor sentiment across global forex markets.

U.S.–Iran Peace Talks Boost Risk Appetite

Investor sentiment improved after weekend reports suggested progress in U.S.–Iran peace negotiations.

U.S. officials stated that a framework agreement had been largely negotiated, aimed at:

  • Ending ongoing geopolitical tensions
  • Restoring access through the Strait of Hormuz
  • Addressing concerns around Iran’s nuclear program

While progress was reported, officials also warned that military action remains a possibility if talks fail.

Iran acknowledged some progress but continued to oppose key U.S. demands related to its enriched uranium reserves.

Oil Prices Drop, Pressuring the U.S. Dollar

Global oil markets reacted sharply to peace deal optimism, with crude prices falling significantly.

The decline in oil prices:

  • Reduced inflation expectations
  • Lowered demand for safe-haven assets
  • Weakened support for the U.S. dollar
  • Strengthened risk-sensitive currencies

Analysts note that lower energy prices reduce expectations of prolonged inflation, which in turn affects U.S. Federal Reserve interest rate outlook.

Broader Forex Market Impact

A weaker dollar supported gains across major global currencies, including the euro and British pound.

Forex markets were also influenced by:

  • Reduced inflation pressure expectations
  • Lower safe-haven demand
  • Improved global risk sentiment
  • Subdued holiday trading volumes

Market Outlook for Currency Traders

Experts suggest that currency markets may remain volatile depending on:

  • Progress in U.S.–Iran negotiations
  • Oil price stability
  • U.S. Federal Reserve policy signals
  • Global inflation trends
  • Geopolitical developments

If peace talks advance further, the dollar may remain under pressure in the short term.