The situation in the US does not seem so clear.
US Marshals Hold Much Less Than 200K BTC, FOIA Docs Reveal the Real NumberUS Marshals only hold 28,988 BTC instead of earlier estimates of over 200,000.
As for whether they are buying, it could be, but we have no official statement on the matter. So until they come out and make a public statement, we can't take it for granted.
Are we witnessing the start of a global Bitcoin arms race?
It could be starting, but we're not witnessing anything, I would say.
With this article it says that they just acquired it and they didn't buy those Bitcoin they held
They just transfer those Bitcoins they seized to their national treasury that's why they are close or currently have 1 million Bitcoins.
Maybe they are just confuse with this news which Trump media which is owned by Trump
Also I think we are witnessing the early stage of global Bitcoin arm race. Many nations and institutions start to buy Bitcoin and set up their Bitcoin reserve.