Commodity currencies struggle vs U.S. dollar U.S. housing starts data rise Bitcoin falls below $30,000 for first time since June NEW YORK, July 20 (Reuters) - The U.S. dollar climbed to a three-month peak on Tuesday in a flight-to-safety bid, as investors remained anxious about a fast-spreading coronavirus variant that could throttle global growth. Reporting by Gertrude Chavez-Dreyfuss; Editing by Dhara Ranasinghe, Alex Richardson and Richard Chang You have reached your free article limit for this month Register to unlock access to the new Reuters.com Access our new site and The Reuters Daily Briefing newsletter. Our free, limited time preview delivers: Unmatched global source of round-the-clock news World-class journalism and insights to make smart decisions Hand-picked insights delivered daily to your inbox New design to enable quick access to what matters most Sign up Already have an account? Sign in Terms & Conditions apply