OECD, 'inflation falls, but central banks remain cautious' - PMI. Chief economist of the OECD, Clare Lombardelli, said that the drop in inflation "is good news" The OECD head also invites states to "redouble their efforts to contain the increase in spending" and to "work together to revive trade, improve the resilience of supply chains and address common problems, in particular climate change" The body warns that current tensions, starting with the situation in the Middle East, remain a major source of uncertainty.