By Herbert Lash NEW YORK (Reuters) – Safe-haven demand strengthened the dollar on Tuesday to levels last seen in 2002 while the euro slumped to two-decade lows as the latest surge in European gas prices fueled recession concerns. The dollar index rose 1.6% at one point and the euro fell as much as 1.75% to lows last seen in late 2002. It was the biggest single-day decline for the euro and the dollar’s largest one-day gain since COVID-19 roiled markets in March 2020. Other currencies also tumbled as recession fears tanked stocks in Europe and initially on Wall Street. Japan’s yen was near 24-ye…