Holders of U.S. Treasuries...

...enjoy a security premium. Quantifying that security premium is somewhat problematic (and an errand that I will accomplish at a later date). However, foreign holders of U.S. treasuries should be heartened by the latest Quadrennial Defense Report. Its contents reaffirms the U.S.A.'s capability and willingness to deploy security services where world markets are jeopardized.

Some relevant language from the report:

America’s leadership in this world requires a whole-of-government approach that integrates all elements of national power. Agile and flexible U.S. military forces with superior capabilities across a broad spectrum of potential operations are a vital component of this broad tool set, helping to advance our nation’s interests and support common goals. The United States remains the only nation able to project and sustain large-scale combat operations over extended distances.
This unique position generates an obligation to be responsible stewards of the power and influence that history, determination, and circumstance have provided.

...

The United States remains committed to exercising mutual respect and leadership within the architecture of a just and effective international system. America’s enemies fear its ability to build consensus against tyranny. Pursuing and underwriting a strong international order is an undertaking that benefits all nations, none more than the United States. This principle will guide the Department’s interactions with the international community, and it frames our approach to defending the American people and promoting their interests.
America’s interests and role in the world require Armed Forces with unmatched capabilities and a willingness on the part of the nation to employ them in defense of our national interests and the common good. The United States remains the only nation able to project and sustain large-scale operations over extended distances. This unique position generates an obligation to be responsible stewards of the power and influence that history, determination, and circumstance have provided.