This article sheds light on the new sites of contestation of global capitalism and international geopolitics created by transnational ties between Brazilian and Mozambican social movements. With a special focus on the rural sector and land issues, the article examines how the internationalization of Brazil's public policies and companies set the context and opened opportunity to the rise of South-South advocacy networks and the setting up of renewed spaces of political dialogue. Building on the politics of mobilization, it identifies two major coalitions reflecting Brazil's domestic struggles and analyzes their different mobilization strategies and objectives influencing political outcomes.