The Greek debt crisis refers to the financial turmoil that began in late 2009 when Greece revealed its budget deficit was significantly higher than previously reported. This revelation triggered a loss of confidence among investors, leading to skyrocketing borrowing costs for the country and raising concerns about its ability to repay its debts. The crisis is closely linked to current account imbalances, as Greece's excessive spending and low productivity resulted in persistent trade deficits, necessitating external borrowing and adjustment measures.