This paper explores the guiding principles and expectations that shaped Donald Trump's foreign policy, characterized by the "America First" doctrine. Trump's foreign policy aimed to renegotiate global power dynamics, challenge multilateral agreements, and prioritize economic nationalism. Key elements included reducing U.S. involvement in international conflicts, escalating trade wars with China, renegotiating NAFTA, and expanding ties with Israel while isolating Iran. Trump's presidency sought to recalibrate traditional alliances such as NATO, while fostering new relationships in the Middle East, notably through normalization agreements between Israel and Arab states. This approach reflected a shift from idealism to realism, emphasizing transactional diplomacy over ideological commitments. Despite some perceived successes, such as advancing peace deals, Trump's foreign policy faced criticism for undermining global stability, alienating allies, and fostering geopolitical uncertainty. This analysis evaluates the broader implications of Trump's approach on U.S. global standing, highlighting both the achievements and the enduring challenges that continue to shape American foreign policy.