Can Ukraine capitalise on chaos in Russia?

UKRAINIANS WATCHED with glee as Russia on June 24th. They had hoped that Yevgeny Prigozhin’s march on Moscow would tie up Russian troops and destabilise Vladimir Putin’s regime. Alas, the proved short-lived. In recent days Ukraine’s army has made modest advances in the east. But a counter-offensive that began on June 4th shows little sign of breaking through Russian lines in force any time soon, making some Western officials nervous.