LONDON — European stocks opened lower on Friday as investors digest ongoing geopolitical tensions. The pan-European Stoxx 600 edged lower at the opening bell on Friday, with most major bourses and sectors in negative territory. On Thursday, the benchmark was lifted by semiconductor stocks, with Dutch semiconductor equipment maker ASML popping as much as 7% amid positive results from TSMC . It closed 6% higher. ASM International advanced 11.2%, and BE Semiconductor gained 7.3% Thursday. Just a