WASHINGTON — Developing nations are facing a catastrophic debt crisis in the coming months as rapid inflation, slowing growth, rising interest rates and a strengthening dollar coalesce into a perfect storm that could set off a wave of messy defaults and inflict economic pain on the world’s most vulnerable people.Poor countries owe, by some calculations, as much as $200 billion to wealthy nations, multilateral development banks and private creditors. Rising interest rates have increased the value of the dollar, making it harder for foreign borrowers with debt denominated in U.S. currency to repay their loans.Defaulting on a huge swath of loans would send borrowing costs for vulnerable nations even higher and could spawn financial crises when nearly 100 million people have already been pushed into poverty this year by the combined effects of the pandemic, inflation and Russia’s war in Ukraine.The danger poses another headwind for a world econ …
