In the short run USD will be strong.When foreign corporates and...

In the short run USD will be strong.
When foreign corporates and sovereigns take on USD debt they are effectively shorting the USD against their own currencies.
When USD moves up it results in a short squeeze.

In the longer term a hegemon enjoys the privilege of a reserve currency
The pound sterling lost its reserve status following two World Wars that depleted Britain's exchequer to the point of bankruptcy.
The Suez crisis was the straw that broke the pound sterling camel's back.

The FSB has infiltrated Ukraine's military and government.
This is turning into a humiliating rout .
South Vietnam, South Korea, Libya, Iraq, Iran, Afghanistan were peripheral states but did drain the exchequer.
This is a head to head between two military superpowers in the heart of Europe and the US no longer has the industrial base to sustain a longer term war.