Two critical dimensions are gender inequality, and inequalities in realizing sexual and reproductive health and rights; the latter, in particular, still receives inadequate attention. Neither explains the totality of inequality in the world today, but both are essential pieces that demand much more action. Without such action, many women and girls will remain caught in a vicious cycle of poverty, diminished capabilities, unfulfilled human rights and unrealized potential—especially in developing countries, where gaps are widest.