What does Biden’s decision to allow Ukraine to use longer-range US weapons mean?

Emergency services personnel work to extinguish a fire following a Russian rocket attack in Poltava region, Ukraine (Ukrainian Emergency Service via AP)

The US will allow Ukraine to use American-supplied longer-range weapons to conduct strikes inside Russian territory, a long-sought request by Kyiv.

It was not clear if there would be limits on Ukraine’s use of the Army Tactical Missile System (ATACMS) as there have been on other US missile systems.