India, April 4 -- Air raid sirens sounded across parts of Israel on Saturday after what authorities described as incoming fire from Iran and Lebanon, the latest sign that a conflict once fought in shadows has become overt and increasingly difficult to contain.

The alerts sent residents into shelters from northern towns to areas closer to the country's center. In some areas, missile impacts caused damage to buildings and infrastructure, underscoring the growing reach of the confrontation.

The barrage followed Israeli strikes inside Iran, part of an expanding campaign that has drawn in multiple countries and raised concerns about a prolonged regional war.

Israeli strikes deepen confrontation with Iran Israeli officials have said their op...