Providing US Patriot missiles could transform Ukraine’s defences. But it’s a move with risks

...Some fear that giving certain military support to Ukraine risks wider escalation, but this was not the basis for US reluctance to send Patriot systems. The US has significantly fewer of them than its own operational analysis suggests are necessary to defend its forces in the Indo-Pacific. Moreover, there is continuing demand for missiles from existing users, from Sweden to Saudi Arabia: the latter expends a significant number of missiles each month in defence of its critical national infrastructure. Missile manufacturing levels, meanwhile, are low."