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US being the wealthiest, strongest and most influential nation, it is worth seeing how their actions or inaction affect other nations. One notable area is US foreign aid.
This web page has the following sub-sections:
Foreign Aid Numbers in Charts and Graphs
Are numbers the only issue?
Aid has been a foreign policy tool to aid the donor not the recipient
Almost all rich nations fail this obligation
Breakdown of aid from all DAC countries

Source: Aid at a Glance 2004-2005, OECD Web Site