Michael Hudson's "Super Imperialism:
The Economic Strategy Of Imperial America" explains:
"When the US payment deficit pumps dollars into foreign economies, these banks (have) little option except to buy US Treasury bills and bonds which the Treasury spends on financing an enormous, hostile military build-up to encircle (today's) major dollar-recyclers China, Japan and Arab OPEC oil producers" - essentially a process by which they finance their own endangerment.