The US secretly delivered long-range ATACMS missiles to Ukraine earlier this month that Biden had previously resisted sending. Biden approved the transfer in February, and they were included in the $300 million aid package announced on March 12th. Biden directed the move following Russia's procuring of North Korean missiles and attacks on Ukrainian infrastructure. Ukraine had been requesting the long-range missiles but the US resisted due to supply issues and escalation concerns. The missiles have a range of up to 190 miles.