Wall Street’s Momentum Machine Faces a Middle East Stress Test

A residential building that was destroyed in an attack by Israel in Tehran on June 13.

Photographer: Majid Saeedi/Getty Images

It’s the kind of geopolitical flashpoint that might once have triggered a full-blown market meltdown: Israeli warplanes struck Iranian nuclear sites, Tehran vowed revenge — then followed through. Oil spiked.

Yet in a year where crises have come in waves, traders from London to New York opted to hold their breath rather than flee en masse.