Sources: 
The recent US-Iran conflict has dramatically reduced the US missile stockpile, with reports indicating that during just 39 days of fighting, the US military has burned through at least
45% of its stockpile of Precision Strike Missiles and nearly
50% of its Patriot interceptor missiles.
Mark Cancian, a retired US Marine Corps Colonel, noted, "It will take one to four years to replenish these inventories and several years after that to expand them to where they need to be." Currently, the US remains capable of conducting operations against Iran, but its capacity to face other adversaries like China is increasingly in jeopardy.
According to the Center for Strategic and International Studies, the US military retains enough munitions for immediate actions in Iran, but fears of a critical shortage could hinder future engagements, particularly in the Pacific.
President Trump has requested increased funding to address these stock shortages, contending that the US is not in dire straits, which contradicts expert analyses detailing the worrying depletion of important munitions.
"The Iranians do have the ability to make a lot of Shahed drones and ballistic missiles," remarked
Senator Mark Kelly, highlighting the urgency of the situation.
As the Trump administration pushes for enhanced military production capacity, forecasts indicate restock levels may not meet operational demands for up to
four years.
Sources: 

The United States risks depleting its missile stockpiles after extensive use in the ongoing Iran conflict, where over 50% of certain munitions have been expended. Former President Trump has called for peace talks amid growing concerns about future military readiness, particularly regarding potential conflicts with China.