The attack, which shut down the capital’s airports for several hours, was part of an escalating campaign to bring the conflict home to Russians.

Europe and the larger world will be watching carefully to see if talks produce a lasting agreement on Iran’s nuclear program and the Strait of Hormuz.

Lacy Reynolds was waiting to catch the next flight when the aircraft crashed in Butler, Mo., killing 11 passengers and a pilot. She wasn’t sure she could keep skydiving.