To a limited extent, the OECD Convention on the Bribery of Foreign Officials drew attention within the global private sector to the damaging effects of corruption and the potential costs of bribery by companies headquartered in countries that are signatories to the convention. International efforts to bring to account companies that perpetrate or are complicit in environmental destruction, child labour exploitation, and political violence meet with stiff opposition from within the business community.
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I am translating this article. I am confused about what the word "within" mean in these sentences, because "within" has more than one meaning.
Can we replace the first "within" by "of" and delete second "within"?