21 April 2023

Berlin – Ukraine Defense Contact Group meeting at Ramstein Air Base, with U.S. Secretasry of Defense Lloyd Austin in attendance. 

Dublin – Serbian Prime Minister Ana Brnabić wraps up two-day visit to Ireland. 

Lisbon – Brazilian President Luiz Inacio Lula da Silva begins official visit to Portugal. 

Geneva - The World Meteorological Organization (WMO) to release the annual State of the Global Climate report.  

Frankfurt – German rail workers hold strike over wages.