Simple framework for when to buy long-term Treasuries:

Are higher rates and rising interest expense forcing deep cuts to Entitlements and Defense?

Yes → Bonds are a buy
No → Bonds are a sell

One of these three is in a bubble: Bonds, the Dollar, or Boomer demographics.

The math is straightforward. If fiscal discipline materializes under rate pressure, duration works. If not, the bond market reprices reality — or the dollar does. Right now, interest expense is climbing fast, but spending cuts remain mostly theoretical. That's the key variable to watch.