It’s been about four months since President Donald Trump threatened sanctions against countries supplying much-needed oil to Cuba. The move has added pressure to an economy already struggling with shortages, inflation, and rolling blackouts — all while Cuba continues to navigate the effects of the longstanding U.S. embargo. Marta Núñez-Sarmiento is a sociologist and retired professor at the University of Havana, whose work has explored gender, migration, and economic change in Cuba.