When faced with conflicts arising from cultural differences within a project that involves multiple organizations, the project manager should first seek guidance from the project sponsor. This is because the project sponsor has the authority and perspective to understand the broader organizational strategies and can provide direction on how to best address the cultural issues. Additionally, the sponsor can facilitate the development of a strategy that aligns with the project's goals and the organizations' cultures123. References:
* Managing Cross Cultural Differences in Projects1.
Cultural Diversity in Project Management: How Project Success is Perceived in Different Cultures2.
* Cultural Differences: Knowing the Nine Dimensions of Culture to Succeed in Project Management3.