This month, we're highlighting some of the best conversations from the 2025 HBR Leadership Summit held in April. In this episode, Janti Soeripto, CEO of Save the Children US, shares how the organization navigates overlapping global crises—from pandemics to war—while staying focused on its core mission: ensuring children survive and thrive. With 24,000 staff members working across 115 countries, Save the Children provides health, education, protection, emergency response, and advocacy services. Soeripto offers hard-won lessons on leading with clarity, measuring impact in volatile environments, and remaining agile while never losing sight of mission—and why optimism and data must coexist.