I just did a double take at that sentence that is unrelated to the rest of the entry. I checked Foreign News (p. 14 above) and saw an item for Mexico that includes this: "Carvajal is seeking American aid for Juarez."
Benito Juarez is President of Mexico, where a civil war is ongoing. I suppose George suspects President Buchanan is thinking of getting involved on the side of the Mexican government. That's not the civil war Mr. Strong should be concerned with.
Mr. Strong is intelligent, and has a good surface knowledge of foreign affairs, but it is not deep. He misses a lot of the local political culture, and makes assumptions from an American perspective, when commenting on foreign countries.
I may have asked this before, but is anybody else in these threads reading George Templeton Strongs diary entries in George Plimptons voice?