TOKYO: Technology shares helped Asian stock markets rebound on Tuesday (Jul 21), while oil prices eased slightly even as Iran targeted US radar and air defence installations in the Gulf. Tech stocks dived in recent sessions on ongoing fears of excessive valuations in the artificial intelligence (AI) sector, with chipmakers leading the rout. But on Monday the Nasdaq advanced, and this was mirrored in Asia, helping Tokyo rise more than 3 per cent, Seoul 3.6 per cent and Shanghai almost 2 per cent. Stephen Innes of SPI Asset Management cautioned, however, that the tech rebound did not appear to be driven by "a decisive improvement in the AI fundamentals". Hours later, the Iranian army said it had targeted US assets in Kuwait and Bahrain, including air defence systems, radar installations and administrative buildings.