For months, Ukraine’s use of powerful Western-supplied air-defense systems to repel Russian missile attacks has provided its citizens with some reassurance that a protective shield was effectively in place over big cities such as the capital, Kyiv. On Friday, that shield partly cracked. In one of the war’s largest bombardments, 35 missiles slipped Ukraine’s air cover on Friday, killing dozens. Ukraine responded with shelling on the Russian region of Belgorod, killing at least 14.In one of the biggest air assaults of the war, Russia launched so many missiles that the Ukrainian defenses seem to have been overloaded. Will Russia respond harshly after shelling on the Russian region of Belgorod,?

