IMF Managing Director Christine Lagarde leaves the G-20 Finance Ministers and Central Bank Governors' meeting at the IMF and World Bank's 2019 Annual Spring Meetings, in Washington, April 12, 2019. REUTERS/James Lawler Duggan/File PhotoWASHINGTON (Reuters) - International Monetary Fund Managing Director Christine Lagarde said on Saturday accountability, transparency and effective communication were key components for…