In 2009, a liberal-conservative coalition under Merkel assumed leadership of the country. In 2013, a grand coalition was established in a Third Merkel cabinet. Among the major German political projects of the early 21st century are the advancement of European integration, the energy transition (Energiewende) for a sustainable energy supply, the "Debt Brake" for balanced budgets, measures to increase the fertility rate significantly (pronatalism), and high-tech strategies for the future transition of the German economy, summarised as Industry 4.0.[87]