The USD/JPY exchange rate has reached its highest level in 34 years, surpassing 152. This surge follows the rise in Treasury yields after March CPI readings. Traders are closely monitoring the breach of the 152 per dollar level. The US Dollar Index also hit its highest since mid-November, up 1.1% at 105.24. The yen's strength is attributed to hotter-than-expected US CPI data, potentially leading to BOJ intervention or rate hikes.